Model 525C Maintenance Manual (Rev 14)

4-10-01 (Rev 3)

AIRWORTHINESS LIMITATIONS INSPECTION TIME LIMITS

1. Purpose and Use
A. This section includes all airworthiness limitations maintenance tasks for the Model 525C Airplane.
NOTE: Refer to the Model 525C Maintenance Manual, Chapter 5, Non-MSG-3 Time Limits/Maintenance Checks
and MSG-3 Inspection Documents and Other Required Tasks for a complete list of all Model 525C
scheduled inspection requirements.
B. The interval specified for a given task cannot be changed, escalated, or deleted without the concurrence of the responsible
Aircraft Certification Office Branch (ACOB).
NOTE: There is no task tolerance for intervals published in this section.
C. The MM task numbers are hyperlinked to task details in this manual. The Zone number(s) are also hyperlinked to the Model
525C Maintenance Manual, Chapter 6, Airplane Zoning - Description and Operation to assist in planning and completing the
tasks.
D. Certification Maintenance Requirements (CMRs)
(1) CMR inspections and Component Time Limits were derived from the Model 525C System Safety Assessment. CMRs are
defined in Advisory Circular (AC) 25-19 (latest revision) and given in Table 1 and Table 3 respectively.
(2) There may be some items listed in Table 1, Certification Maintenance Requirements Tasks that are not CMR's but are still
considered mandatory Airworthiness Limitations Inspection Tasks. If included in the table, these tasks are identified by a
NOTE which states they are not CMR's.
E. Airworthiness Limitations Inspection Time Limits
(1) In accordance with §23.575, Inspection Time Limits and Component Time Limits are defined for the Model 525C and
presented in Table 2 and Table 3 respectively.
F. Corrosion Prevention
(1) The airworthiness limitations recondition and discard intervals assume corrosion is maintained to Level 1 or better. Level 1
is achieved by maintaining the aircraft according to the MSG-3 maintenance procedures identified in this Model 525C
Maintenance Manual. Refer to Chapter 5, MSG-3 Maintenance Planning Document, Corrosion Prevention and Control
Program (CPCP) for further details.
G. For groups of common tasks, refer to:
(1) Table 1 Certification Maintenance Requirement (CMR)Tasks
(2) Table 2 Airworthiness Limitation Tasks
(3) Table 3 CMR and Airworthiness Limitation Component Time Limit Tasks
(a) Refer to Table 3 for Component Time Limits Tasks that have been duplicated from Table 1 and Table 2 to assist
operators in maintenance planning.
H. Certification Maintenance Requirement (CMR) Tasks
NOTE: All initial intervals are repeat intervals unless otherwise noted.
NOTE: Inspections that do not apply to all airplanes will have the effectivity noted in the title of the Inspection
Task.
Table 1. Certification Maintenance Requirement (CMR) Tasks
Maintenance Inspection
Task Title Interval/Note(s) Zone Effectivity
Manual Task # Document
Chapter 21 - Air Conditioning
AUX, 167, -0001 and
21-31-00-7200 Pressurization System Functional Check 800 Flight Hours 4-12-MI
317, 318 On
Chapter 24 - Electrical Power
Control Relay and Fuse Limiter Functional 12,000 Flight -0001 and
24-61-00-7200 4-12-ML 243, 311
Check Hours On
Chapter 27 - Flight Controls

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 Model 525C Maintenance Manual (Rev 14)
4-10-01 (Rev 3)

-0001 and
27-35-00-7100 Elevator Pitch Trim Operational Check 400 Flight Hours 4-12-MK 340, 341
On
245, 534,
Ground Spoiler System Operational -0001 and
27-65-00-7100 400 Flight Hours 4-12-MK 634, 711,
Check On
721, 731
12,000 Flight 4-12-00, -0001 and
27-65-10-9600 Ground Spoiler Actuator Restoration 532, 632
Hours Table 2 On
Chapter 28 - Fuel
Engine Firewall Shutoff Valves Motor -0001 and
28-21-40-7100 400 Flight Hours 4-12-MK 512, 612
Actuator Operational Check On
Chapter 30 - Ice and Rain Protection
Tail Deice Pressure Switch Functional -0001 and
30-13-10-7200 1200 Flight Hours 4-12-MA 340
Check On
Chapter 32 - Landing Gear
AUX, 711, -0001 and
32-00-00-7200 Landing Gear System Functional Check 400 Flight Hours 4-12-MK
721, 731 On
Chapter 34 - Navigation
Flight Display Reversionary Mode 12,000 Flight -0001 and
34-63-00-7100 4-12-ML AUX
Operational Check Hours On
Chapter 76 - Engine Controls
330 Flight Hours
or every 12
Calendar Months,
whichever comes
Time Limited Dispatch Operational first -0001 and
76-15-00-7100 4-12-MM AUX
Check NOTE: On
Refer to 4-12-MM
for additional
interval
information.
I. Airworthiness Limitation Tasks
NOTE: All initial intervals are repeat intervals unless otherwise noted.
NOTE: Inspections that do not apply to all airplanes will have the effectivity noted in the title of the Inspection
Task.
NOTE: If the part numbered components listed in Table 2 are installed on an airplane, the interval applies
regardless of the airplane serial number.
Table 2. Airworthiness Limitation Tasks
Effectivity (Part
Maintenance Inspection
Part Number Task Title Interval/Note(s) Zone Substitutions
Manual Task # Document
May Apply)
Chapter 32 - Landing Gear
NOTE:
The attaching hardware related to these landing gear installations is to be replaced whenever the associated
components are replaced. The attaching hardware can be used again if a rental component is to be installed for no
more than 100 Landings. The attaching hardware can also be used again if the original gear is to be installed
again. If a replacement gear is installed, all of the attachment hardware must be replaced.

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 Model 525C Maintenance Manual (Rev 14)
4-10-01 (Rev 3)

7194005-13 Left Main Landing

20,000 4-12-00, Table 2
Gear Trunnion 720 -0001 thru -0083
Landings
Assembly Discard
7141020-11 Left Main Landing
20,000
Gear Trunnion 4-12-00, Table 2 720 -0084 thru -0085
Landings
Assembly Discard
7141020-15 Left Main Landing
20,000
Gear Trunnion 4-12-00, Table 2 720 -0086 thru -0089
Landings
Assembly Discard
7141020-19 Left Main Landing
20,000
Gear Trunnion 4-12-00, Table 2 720 -0090 and On
Landings
Assembly Discard
32-11-00-9600
7194005-14 Right Main Landing
20,000
Gear Trunnion 4-12-00, Table 2 730 -0001 thru -0083
Landings
Assembly Discard
7141020-12 Right Main Landing
20,000
Gear Trunnion 4-12-00, Table 2 730 -0084 thru -0085
Landings
Assembly Discard
7141020-16 Right Main Landing
20,000
Gear Trunnion 4-12-00, Table 2 730 -0086 thru -0089
Landings
Assembly Discard
7141020-20 Right Main Landing
20,000
Gear Trunnion 4-12-00, Table 2 730 -0090 and On
Landings
Assembly Discard
7141030-3 Left Trailing Link 43,300
4-12-00, Table 2 720 -0001 thru -0083
Assembly Discard Landings
7141030-5 Left Trailing Link 43,300
4-12-00, Table 2 720 -0084 thru -0246
Assembly Discard Landings
7141030-7 Left Trailing Link 43,300
4-12-00, Table 2 720 -0247 thru -0377
Assembly Discard Landings
7141030-9 Left Trailing Link 43,300
4-12-00, Table 2 720 -0378 and On
Assembly Discard Landings
32-11-00-9601
7141030-4 Right Trailing Link 43,300
4-12-00, Table 2 730 -0001 thru -0083
Assembly Discard Landings
7141030-6 Right Trailing Link 43,300
4-12-00, Table 2 730 -0084 thru -0246
Assembly Discard Landings
7141030-8 Right Trailing Link 43,300
4-12-00, Table 2 730 -0247 thru -0377
Assembly Discard Landings
7141030-10 Right Trailing Link 43,300
4-12-00, Table 2 730 -0378 and On
Assembly Discard Landings
7141050-3 Left or Right Main -0001 thru -0077
23,300 720,
Landing Gear Oleo 4-12-00, Table 2 and -0079 thru -
Landings 730
Assembly Discard 0083
7141050-4 Left or Right Main
23,300 720, -0078, -0084
Landing Gear Oleo 4-12-00, Table 2
Landings 730 thru -0089
Assembly Discard
32-11-00-9602
7141050-5 Left or Right Main
23,300 720,
Landing Gear Oleo 4-12-00, Table 2 -0090 and On
Landings 730
Assembly Discard

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 Model 525C Maintenance Manual (Rev 14)
4-10-01 (Rev 3)

9912705-4 Left or Right Main

Landing Gear 15,000 720,
4-12-00, Table 2 -0001 thru -0391
Hydraulic Actuator Landings 730
Discard
32-11-00-9603
9912842-1 Left or Right Main
Landing Gear 720,
1000 Landings 4-12-00, Table 2 -0392 and On
Hydraulic Actuator 730
Discard
7142010-5 Nose Landing Gear 26,000
4-12-00, Table 2 710 -0001 thru -0084
Assembly Discard Landings
7142010-7 Nose Landing Gear 26,000
4-12-00, Table 2 710 -0085
Assembly Discard Landings
7142010-8 Nose Landing Gear 26,000
4-12-00, Table 2 710 -0086 thru -0152
Assembly Discard Landings
7142010-9 Nose Landing Gear 26,000
4-12-00, Table 2 710 -0086 thru -0152
Assembly Discard Landings
7142010-10 Nose Landing Gear 26,000
4-12-00, Table 2 710 -0084
Assembly Discard Landings
7142010-11 Nose Landing Gear 26,000
32-21-00-9600 4-12-00, Table 2 710 -0085
Assembly Discard Landings
7142010-12 Nose Landing Gear 26,000
4-12-00, Table 2 710 -0153 thru -0233
Assembly Discard Landings
7142010-13 Nose Landing Gear 26,000
4-12-00, Table 2 710 -0153 thru -0174
Assembly Discard Landings
7142010-14 Nose Landing Gear 26,000
4-12-00, Table 2 710 -0175 thru -0233
Assembly Discard Landings
7142010-15 Nose Landing Gear 26,000
4-12-00, Table 2 710 -0234 and On
Assembly Discard Landings
7142010-16 Nose Landing Gear 26,000
4-12-00, Table 2 710 -0234 and On
Assembly Discard Landings
9912705-1 Nose Landing Gear
15,000
Hydraulic Actuator 4-12-00, Table 2 710 -0001 thru -0027
Landings
Discard
9912705-5 Nose Landing Gear
15,000
32-21-00-9601 Hydraulic Actuator 4-12-00, Table 2 710 -0028 thru -0391
Landings
Discard
9912842-2 Nose Landing Gear
Hydraulic Actuator 1000 Landings 4-12-00, Table 2 710 -0392 and On
Discard
Chapter 52 - Doors
Cabin Door and
1200 Flight 810,
52-00-00-2200 Escape Hatch Skins 4-12-MA -0001 and On
Hours 820
Detailed Inspection
Chapter 53 - Fuselage

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 Model 525C Maintenance Manual (Rev 14)
4-10-01 (Rev 3)

311,
Tailcone Skin Detailed 8600 Flight 312,
53-00-00-2201 4-12-MF -0001 and On
Inspection Hours 321,
322
110,
131,
132,
141,
142,
151,
152,
161,
162,
Cabin Skins Detailed 1200 Flight
53-00-00-2202 4-12-MA 211, -0001 and On
Inspection Hours
212,
221,
222,
241,
242,
251,
252,
261,
262
Cabin Door Opening
Lintel Upper Forward
Corner Around 12,000 Flight
53-00-00-2501 4-12-ML 251 -0001 and On
Fasteners (FF-D1-16) Hours (NOTE 1)
(Eddy Current) Special
Detailed Inspection
221,
Forward Pressure
2500 Flight 222,
53-21-10-2200 Bulkhead Web 4-12-MB -0001 and On
Hours 241,
Detailed Inspection
242
Forward Pressure
221,
Bulkhead Tension
5000 Flight 222,
53-21-10-2500 Ring Radius (FF-D1-2) 4-12-MD -0001 and On
Hours 241,
(Eddy Current) Special
242
Detailed Inspection
Forward Pressure
Bulkhead Horizontal
12,000 Flight 221,
Beam Connection
Hours then every 222,
53-21-10-2501 Fasteners at WL 4-12-MH -0001 and On
4000 Flight 241,
128.00 (FF4) (Eddy
Hours thereafter 242
Current) Special
Detailed Inspection
Forward Pressure
Bulkhead Removable
Panel Support 12,000 Flight 221,
Structure Fastener Hours then every 222,
53-21-10-2502 4-12-MH -0001 and On
Holes and Cutouts 4000 Flight 241,
(FF-D1-4) (Eddy Hours thereafter 242
Current) Special
Detailed Inspection

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 Model 525C Maintenance Manual (Rev 14)
4-10-01 (Rev 3)

Forward Pressure
Bulkhead Inboard 12,000 Flight 221,
Vertical Beam Hours then every 222,
53-21-10-2503 4-12-MH -0001 and On
Fasteners (FF2A) 4000 Flight 241,
(Eddy Current) Special Hours thereafter 242
Detailed Inspection
Forward Pressure
Bulkhead Horizontal 12,000 Flight 221,
Beam Upper Aft Angle Hours then every 222,
53-21-10-2504 4-12-MH -0001 and On
Fasteners (FF2B) 4000 Flight 241,
(Eddy Current) Special Hours thereafter 242
Detailed Inspection
Forward Pressure
Bulkhead Center Sill 12,000 Flight 221,
Support Fasteners Hours then every 222,
53-21-10-2505 4-12-MH -0001 and On
(FF7A) (Eddy Current) 4000 Flight 241,
Special Detailed Hours thereafter 242
Inspection
261,
Aft Pressure Bulkhead
2500 Flight 262,
53-21-20-2200 Web Detailed 4-12-MB -0001 and On
Hours 311,
Inspection
312
Aft Pressure Bulkhead
261,
Tension Ring Radius
5000 Flight 262,
53-21-20-2500 (FF-D1-17) (Eddy 4-12-MD -0001 and On
Hours 311,
Current) Special
312
Detailed Inspection
Windshield Support
Structure Lower Sill,
12,000 Flight 221,
Interior Flange at
Hours then every 222,
53-21-30-2500 Center Post Fasteners 4-12-MH -0001 and On
4000 Flight 241,
(FF9A) (Eddy Current)
Hours thereafter 242
Special Detailed
Inspection
Windshield Support
Structure Lower Sill,
Vertical Flange at
12,000 Flight 221,
Forward Pressure
Hours then every 222,
53-21-30-2501 Bulkhead Outboard 4-12-MH -0001 and On
4000 Flight 241,
Fitting Fasteners
Hours thereafter 242
(FF10A) (Eddy
Current) Special
Detailed Inspection
Forward Pressure
Bulkhead Outboard 12,000 Flight 221,
Fitting Fasteners Hours then every 222,
53-21-30-2502 4-12-MH -0001 and On
(FF10B) (Eddy 4000 Flight 241,
Current) Special Hours thereafter 242
Detailed Inspection

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 Model 525C Maintenance Manual (Rev 14)
4-10-01 (Rev 3)

Forward Pressure
Bulkhead Center Sill
12,000 Flight 221,
Support Horizontal
Hours then every 222,
53-21-30-2503 Flange Fasteners 4-12-MH -0001 and On
4000 Flight 241,
(FF11A) (Eddy
Hours thereafter 242
Current) Special
Detailed Inspection
Windshield Support
Structure Lower Sill,
12,000 Flight 221,
Windshield Attach
Hours then every 222,
53-21-30-2504 Holes Fasteners 4-12-MH -0001 and On
4000 Flight 241,
(FF12) (Eddy Current)
Hours thereafter 242
Special Detailed
Inspection
Windshield Support
Structure Center Post 12,000 Flight 221,
Channel Fasteners Hours then every 222,
53-21-30-2505 4-12-MH -0001 and On
(FF14A) (Eddy 4000 Flight 241,
Current) Special Hours thereafter 242
Detailed Inspection
Windshield Support
Structure Outboard 12,000 Flight 221,
Side Post Fasteners Hours then every 222,
53-21-30-2506 4-12-MH -0001 and On
(FF19) (Eddy Current) 4000 Flight 241,
Special Detailed Hours thereafter 242
Inspection
NOTE:
The attaching hardware related to these landing gear installations below is to be replaced whenever the
associated components are replaced. The attaching hardware can be used again if a rental component is to be
installed for no more than 100 Landings. The attaching hardware can also be used again if the original gear is to be
installed again. If a replacement gear is installed, all of the attachment hardware must be replaced.
Left Nose Landing
26,000
7113052-9 Gear Attach Fitting 4-12-00, Table 2 711 -0001 and On
Landings
Assembly Discard
53-00-00-9600
Right Nose Landing
26,000
7113052-10 Gear Attach Fitting 4-12-00, Table 2 711 -0001 and On
Landings
Assembly Discard
Nose Landing Gear
Hydraulic Actuator 26,000
53-00-00-9601 7111091-8 4-12-00, Table 2 711 -0001 and On
Fitting Assembly Landings
Discard
Chapter 55 - Stabilizers
Rear Spar Upper Cap 12,000 Flight
Fasteners at BL 6.00 Hours then
331,
55-00-00-2500 to SS 25.03 (RS) Every 2200 4-12-MG -0001 and On
332
(Eddy Current) Special Flight Hours
Detailed Inspection Thereafter

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 Model 525C Maintenance Manual (Rev 14)
4-10-01 (Rev 3)

Center Spar Upper

12,000 Flight
Cap Fasteners at BL 321,
Hours then every
55-00-00-2501 6.00 to SS 25.03 (CS) 4-12-MH 322, -0001 and On
4000 Flight
(Eddy Current) Special 333
Hours thereafter
Detailed Inspection
Center Spar Upper
12,000 Flight
Splice Plates at BL 321,
Hours then every
55-00-00-2502 0.00 (CSOSP) (Eddy 4-12-MH 322, -0001 and On
4000 Flight
Current) Special 333
Hours thereafter
Detailed Inspection
Chapter 56 - Windows
251,
Cabin Windows 4000 Flight 252,
56-21-10-2201 4-12-MC -0001 and On
Detailed Inspection Hours 261,
262
Chapter 57 - Wings
Main Spar Lower Cap
12,000 Flight
at WS 15.00 to CWS
Hours then every 521,
57-10-00-2500 30.00 (W1) (Eddy 4-12-MH -0001 and On
4000 Flight 621
Current) Special
Hours thereafter
Detailed Inspection
Main Spar Lower Cap
12,000 Flight 521,
at WS 36.11 to CWS
Hours then every 522,
57-10-00-2501 185.70 (W2) (Eddy 4-12-MH -0001 and On
4000 Flight 621,
Current) Special
Hours thereafter 622
Detailed Inspection
521,
522,
Main Spar Lower Cap
12,000 Flight 531,
at CWS 222.09 to
Hours then every 532,
57-10-00-2502 CWS 241.74 (W3) 4-12-MH -0001 and On
4000 Flight 621,
(Eddy Current) Special
Hours thereafter 622,
Detailed Inspection
631,
632
521,
522,
Rear Spar Lower Cap
12,000 Flight 531,
at WS 15.00 to CWS
Hours then every 532,
57-10-00-2503 30.00 (W5) (Eddy 4-12-MH -0001 and On
4000 Flight 621,
Current) Special
Hours thereafter 622,
Detailed Inspection
631,
632
521,
522,
Rear Spar Lower Cap
12,000 Flight 531,
at WS 30.00 to WS
Hours then every 532,
57-10-00-2504 79.00 (W6) (Eddy 4-12-MH -0001 and On
4000 Flight 621,
Current) Special
Hours thereafter 622,
Detailed Inspection
631,
632

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 Model 525C Maintenance Manual (Rev 14)
4-10-01 (Rev 3)

521,
522,
Rear Spar Lower Cap
12,000 Flight 531,
at CWS 163.60 to
Hours then every 532,
57-10-00-2505 CWS 241.74 (W7) 4-12-MH -0001 and On
4000 Flight 621,
(Eddy Current) Special
Hours thereafter 622,
Detailed Inspection
631,
632
Front Spar Lower Cap
Stack-Up Fastener 12,000 Flight
Holes at LWS 15.00 to Hours then every 512,
57-10-00-2506 4-12-MH -0001 and On
RWS 15.00 (WFS1) 4000 Flight 612
(Eddy Current) Special Hours thereafter
Detailed Inspection
Main Spar Lower Cap
Stack-Up Fastener 12,000 Flight
Holes at LWS 15.00 to Hours then every 512,
57-10-00-2507 4-12-MH -0001 and On
RWS 15.00 (WMS1) 4000 Flight 612
(Eddy Current) Special Hours thereafter
Detailed Inspection
Rear Spar Lower Cap
Stack-Up Fastener 12,000 Flight
Holes at LWS 15.00 to Hours then every 512,
57-10-00-2508 4-12-MH -0001 and On
RWS 15.00 (WRS1) 4000 Flight 612
(Eddy Current) Special Hours thereafter
Detailed Inspection
Stringer 11 Lower
Flange Stack-Up
12,000 Flight
Fastener Holes at
Hours then every 512,
57-10-00-2509 LWS 15.00 to RWS 4-12-MH -0001 and On
4000 Flight 612
15.00 (WST1) (Eddy
Hours thereafter
Current) Special
Detailed Inspection
NOTE:
The attaching hardware related to these landing gear installations below is to be replaced whenever the
associated components are replaced. The attaching hardware can be used again if a rental component is to be
installed for no more than 100 Landings. The attaching hardware can also be used again if the original gear is to be
installed again. If a replacement gear is installed, all of the attachment hardware must be replaced.
Left Forward Trunnion
43,300
7141155-1 Attach Fitting 4-12-00, Table 2 721 -0001 and On
Landings
Assembly Discard
57-00-00-9600
Right Forward
43,300
7141155-2 Trunnion Attach Fitting 4-12-00, Table 2 731 -0001 and On
Landings
Assembly Discard
Left Aft Trunnion
43,300
7141165-1 Attach Fitting 4-12-00, Table 2 721 -0001 and On
Landings
Assembly Discard
57-00-00-9601 Right Aft Trunnion
43,300
7141165-2 Attach Fitting 4-12-00, Table 2 731 -0001 and On
Landings
Assembly Discard

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 Model 525C Maintenance Manual (Rev 14)
4-10-01 (Rev 3)

Left Side Brace

43,300
7141175-1 Actuator Attach Fitting 4-12-00, Table 2 721 -0001 and On
Landings
Assembly Discard
57-00-00-9602
Right Side Brace
43,300
7141175-2 Actuator Attach Fitting 4-12-00, Table 2 731 -0001 and On
Landings
Assembly Discard
Chapter 71 - Power Plant
Forward and Aft
Engine Isolators
Detailed Inspection
NOTE:
Refer to the LORD
Aircraft Engine 5500 Flight 411,
71-21-00-2200 4-12-ME -0001 and On
Mounting System Hours 412
Component
Maintenance Manual
71-20-70 for Isolator
Inspection and
Replacement.
Forward Engine Beam
Forward and Aft
12,000 Flight
Engine Mount Fitting
Hours then every 411,
71-21-00-2500 Attach Fasteners 4-12-MH -0001 and On
4000 Flight 412
(FMC02) (Eddy
Hours thereafter
Current) Special
Detailed Inspection
Forward Engine Beam
Forward Engine Mount 12,000 Flight
Fitting Lower Lug Bolt Hours then every 411,
71-21-00-2501 4-12-MH -0001 and On
Hole (FLL) (Eddy 4000 Flight 412
Current) Special Hours thereafter
Detailed Inspection
Forward Engine Beam
Engine Mount Fitting
12,000 Flight
Outer Cover Plate
Hours then every 411,
71-21-00-2502 Fasteners (FOP11, 4-12-MH -0001 and On
4000 Flight 412
FOP12) (Eddy
Hours thereafter
Current) Special
Detailed Inspection
Forward Engine Beam
Engine Mount Fitting
12,000 Flight
Lower Cover Plate
Hours then every 411,
71-21-00-2503 Fasteners (FLP16, 4-12-MH -0001 and On
4000 Flight 412
FLP17) (Eddy Current)
Hours thereafter
Special Detailed
Inspection
Forward Engine Beam
Forward and Aft Angle 12,000 Flight
Fasteners (FCM18, Hours then every 411,
71-21-00-2504 4-12-MH -0001 and On
FCM20 and FCM21) 4000 Flight 412
(Eddy Current) Special Hours thereafter
Detailed Inspection

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 Model 525C Maintenance Manual (Rev 14)
4-10-01 (Rev 3)

NOTE:
The Engine Isolator Assembly discard intervals below are to be completed when the engine is removed for
overhaul.
Forward Engine
11,000 Flight 411,
71-21-00-9600 9912711-1 Isolator Assembly 4-12-00, Table 2 -0001 and On
Hours 412
Discard
Aft Engine Isolator 11,000 Flight 411,
71-21-00-9601 9912711-2 4-12-00, Table 2 -0001 and On
Assembly Discard Hours 412
NOTE 1:
An operational limit of 12,000 hours exist pending the issuance of inspection procedures.
J. CMR and Airworthiness Limitation Component Time Limit Tasks
NOTE: All initial intervals are repeat intervals unless otherwise noted.
NOTE: For life-limited parts found in Table 2 and Table 3, the effectivities listed are intended to show the part
numbers that were originally installed on the airplane. Authorized, substitutions, supersedures and
spares replacements may result in part numbers installed on airplanes outside the effectivities listed in
these tables. Life limits are associated with part numbers and should be followed regardless of Airplane
serial number.
(1) Control of Life-Limited Parts
WARNING: If the life status of a part cannot be determined or the life-limit of a part has been reached, the part
shall be considered to be beyond its safe life and must be disposed of in accordance with 14 CFR
Part 43.
(a) 14 CFR Part 43.10 requires all persons who remove life-limited parts from airplanes to safely control these parts.
Most life-limited parts can be controlled by using a record keeping system based on the serial numbers of each part
per 14 CFR Part 43.10(c)(1). Life-limited parts which have been predetermined to be impractical for marking with a
serial number have been identified and annotated by an asterisk (*), which references a footnote, at the end of the
life-limited part numbers.
(b) Where a serial number has not been assigned to a life-limited part, one of the following methods such as tagging or
permanent marking can be used per 14 CFR Part 43.10(c)(2)-(7). Textron Aviation offers the following guidance for
adhering to this rule:
1 Assessing the Status of Life-Limited Parts
NOTE: The following guidelines may be used to assess the life status of an airplane part.
a Original Part - For determining compliance with usage related life limitations, the total airplane hours,
landings, or cycles shall be considered appropriate.
b Replacement Part - For determining compliance with usage related life limitations, consider the airplane
hours, landings, or cycles as appropriate, accrued since the logbook verified part installation plus any prior
usage of the replacement part.
2 Identification and Tracking of Life-Limited Parts
a For parts removed from an airplane, the following are suggested methods of tracking life status and
complying with 14 CFR Part 43.
NOTE: This is not an exhaustive list.
• The part may be marked with permanent marker.
• A tag may be attached to the part.
• A record keeping procedure may be established for the part.
b The following data may be used to track the life status of a part.
NOTE: This is not an exhaustive list.
• Airplane Serial Number
• Part Number
• Part Name
• Part Serial Number

Copyright © Textron Aviation Inc. Page 11 of 15

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 Model 525C Maintenance Manual (Rev 14)
4-10-01 (Rev 3)

• Date Part was Installed/Removed

• Part Flight Hours/Landings.
Table 3. CMR and Airworthiness Limitation Component Time Limit Tasks
Effectivity (Part
Maintenance Inspection
Part Number Task Title Interval/Note(s) Zone Substitutions
Manual Task # Document
May Apply)
Chapter 27 - Flight Controls
Ground Spoiler 12,000 Flight 532,
27-65-10-9600 4-12-00, Table 2 -0001 and On
Actuator Restoration Hours 632
Chapter 32 - Landing Gear
NOTE:
The attaching hardware related to these landing gear installations is to be replaced whenever the associated
components are replaced. The attaching hardware can be used again if a rental component is to be installed for no
more than 100 Landings. The attaching hardware can also be used again if the original gear is to be installed
again. If a replacement gear is installed, all of the attachment hardware must be replaced.
Left Main Landing
20,000
7194005-13 Gear Trunnion 4-12-00, Table 2 720 -0001 thru -0083
Landings
Assembly Discard
Left Main Landing
20,000
7141020-11 Gear Trunnion 4-12-00, Table 2 720 -0084 thru -0085
Landings
Assembly Discard
Left Main Landing
20,000
7141020-15 Gear Trunnion 4-12-00, Table 2 720 -0086 thru -0089
Landings
Assembly Discard
Left Main Landing
20,000
7141020-19 Gear Trunnion 4-12-00, Table 2 720 -0090 and On
Landings
Assembly Discard
32-11-00-9600
Right Main Landing
20,000
7194005-14 Gear Trunnion 4-12-00, Table 2 730 -0001 thru -0083
Landings
Assembly Discard
Right Main Landing
20,000
7141020-12 Gear Trunnion 4-12-00, Table 2 730 -0084 thru -0085
Landings
Assembly Discard
Right Main Landing
20,000
7141020-16 Gear Trunnion 4-12-00, Table 2 730 -0086 thru -0089
Landings
Assembly Discard
Right Main Landing
20,000
7141020-20 Gear Trunnion 4-12-00, Table 2 730 -0090 and On
Landings
Assembly Discard
Left Trailing Link 43,300
7141030-3 4-12-00, Table 2 720 -0001 thru -0083
Assembly Discard Landings
Left Trailing Link 43,300
7141030-5 4-12-00, Table 2 720 -0084 thru -0246
Assembly Discard Landings
Left Trailing Link 43,300
7141030-7 4-12-00, Table 2 720 -0247 thru -0377
Assembly Discard Landings
Left Trailing Link 43,300
7141030-9 4-12-00, Table 2 720 -0378 and On
Assembly Discard Landings
32-11-00-9601

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 Model 525C Maintenance Manual (Rev 14)
4-10-01 (Rev 3)

Right Trailing Link 43,300

7141030-4 4-12-00, Table 2 730 -0001 thru -0083
Assembly Discard Landings
Right Trailing Link 43,300
7141030-6 4-12-00, Table 2 730 -0084 thru -0246
Assembly Discard Landings
Right Trailing Link 43,300
7141030-8 4-12-00, Table 2 730 -0247 thru -0377
Assembly Discard Landings
Right Trailing Link 43,300
7141030-10 4-12-00, Table 2 730 -0378 and On
Assembly Discard Landings
Left or Right Main -0001 thru -0077
23,300 720,
7141050-3 Landing Gear Oleo 4-12-00, Table 2 and -0079 thru -
Landings 730
Assembly Discard 0083
Left or Right Main
23,300 720, -0078, -0084
32-11-00-9602 7141050-4 Landing Gear Oleo 4-12-00, Table 2
Landings 730 thru -0089
Assembly Discard
Left or Right Main
23,300 720,
7141050-5 Landing Gear Oleo 4-12-00, Table 2 -0090 and On
Landings 730
Assembly Discard
Left or Right Main
Landing Gear 15,000 720,
9912705-4 4-12-00, Table 2 -0001 thru -0391
Hydraulic Actuator Landings 730
Discard
32-11-00-9603
Left or Right Main
Landing Gear 720,
9912842-1 1000 Landings 4-12-00, Table 2 -0392 and On
Hydraulic Actuator 730
Discard
Nose Landing Gear 26,000
7142010-5 4-12-00, Table 2 710 -0001 thru -0084
Assembly Discard Landings
Nose Landing Gear 26,000
7142010-7 4-12-00, Table 2 710 -0085
Assembly Discard Landings
Nose Landing Gear 26,000
7142010-8 4-12-00, Table 2 710 -0086 thru -0152
Assembly Discard Landings
Nose Landing Gear 26,000
7142010-9 4-12-00, Table 2 710 -0086 thru -0152
Assembly Discard Landings
Nose Landing Gear 26,000
7142010-10 4-12-00, Table 2 710 -0084
Assembly Discard Landings
Nose Landing Gear 26,000
7142010-11 4-12-00, Table 2 710 -0085
32-21-00-9600 Assembly Discard Landings
Nose Landing Gear 26,000
7142010-12 4-12-00, Table 2 710 -0153 thru -0233
Assembly Discard Landings
Nose Landing Gear 26,000
7142010-13 4-12-00, Table 2 710 -0153 thru -0174
Assembly Discard Landings
Nose Landing Gear 26,000
7142010-14 4-12-00, Table 2 710 -0175 thru -0233
Assembly Discard Landings
Nose Landing Gear 26,000
7142010-15 4-12-00, Table 2 710 -0234 and On
Assembly Discard Landings
Nose Landing Gear 26,000
7142010-16 4-12-00, Table 2 710 -0234 and On
Assembly Discard Landings

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 Model 525C Maintenance Manual (Rev 14)
4-10-01 (Rev 3)

Nose Landing Gear

15,000 4-12-00, Table 2
9912705-1 Hydraulic Actuator 710 -0001 thru -0027
Landings
Discard
Nose Landing Gear
15,000
32-21-00-9601 9912705-5 Hydraulic Actuator 4-12-00, Table 2 710 -0028 thru -0391
Landings
Discard
Nose Landing Gear
9912842-2 Hydraulic Actuator 1000 Landings 4-12-00, Table 2 710 -0392 and On
Discard
Chapter 53 - Fuselage
NOTE:
The attaching hardware related to these landing gear installations is to be replaced whenever the associated
components are replaced. The attaching hardware can be used again if a rental component is to be installed for no
more than 100 Landings. The attaching hardware can also be used again if the original gear is to be installed
again. If a replacement gear is installed, all of the attachment hardware must be replaced.
Left Nose Landing
26,000
7113052-9 Gear Attach Fitting 4-12-00, Table 2 711 -0001 and On
Landings
Assembly Discard
53-00-00-9600
Right Nose Landing
26,000
7113052-10 Gear Attach Fitting 4-12-00, Table 2 711 -0001 and On
Landings
Assembly Discard
Nose Landing Gear
Hydraulic Actuator 26,000
53-00-00-9601 7111091-8 4-12-00, Table 2 711 -0001 and On
Fitting Assembly Landings
Discard
Chapter 57 - Wings
NOTE:
The attaching hardware related to these landing gear installations is to be replaced whenever the associated
components are replaced. The attaching hardware can be used again if a rental component is to be installed for no
more than 100 Landings. The attaching hardware can also be used again if the original gear is to be installed
again. If a replacement gear is installed, all of the attachment hardware must be replaced.
Left Forward Trunnion
43,300
7141155-1 Attach Fitting 4-12-00, Table 2 721 -0001 and On
Landings
Assembly Discard
57-00-00-9600
Right Forward
43,300
7141155-2 Trunnion Attach Fitting 4-12-00, Table 2 731 -0001 and On
Landings
Assembly Discard
Left Aft Trunnion
43,300
7141165-1 Attach Fitting 4-12-00, Table 2 721 -0001 and On
Landings
Assembly Discard
57-00-00-9601
Right Aft Trunnion
43,300
7141165-2 Attach Fitting 4-12-00, Table 2 731 -0001 and On
Landings
Assembly Discard
Left Side Brace
43,300
7141175-1 Actuator Attach Fitting 4-12-00, Table 2 721 -0001 and On
Landings
Assembly Discard
57-00-00-9602 Right Side Brace
43,300
7141175-2 Actuator Attach Fitting 4-12-00, Table 2 731 -0001 and On
Landings
Assembly Discard

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 Model 525C Maintenance Manual (Rev 14)
4-10-01 (Rev 3)

Chapter 71 - Power Plant

NOTE:
The Engine Isolator Assembly discard intervals are to be completed when the engine is removed for overhaul.
Forward Engine
11,000 Flight 411,
71-21-00-9600 9912711-1 Isolator Assembly 4-12-00, Table 2 -0001 and On
Hours 412
Discard
Aft Engine Isolator 11,000 Flight 411,
71-21-00-9601 9912711-2 4-12-00, Table 2 -0001 and On
Assembly Discard Hours 412
NOTE: Refer to Chapter 5, Non-MSG-3 Component Time Limits and MSG-3 Inspection Time Limits, Table 2 for
lists of additional Component Time Limit Tasks.

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