SERVICE 1327E NO.
Piper Aircraft, Inc.
2926 Piper Drive
LETTER
Vero Beach, FL, U.S.A. 32960
Date: May 7, 2024 (S)
Service Letter (SL) 1327E supersedes SL 1327D in its entirety.
SUBJECT: WING WALK MODIFICATION AND INSPECTION
REASON FOR REVISION: To correct serial numbers.
MODELS AFFECTED: SERIAL NUMBERS AFFECTED:
PA-28-140 Cherokee 140 28-20001 thru 28-26946
28-7125001 thru 28-7725290
PA-28-150 Cherokee 150 28-1 thru 28-4377
PA-28-160 Cherokee 160 28-1 thru 28-4377
PA-28-180 Cherokee 180 28-671 thru 28-5859,
28-7105001 thru 28-7205318
PA-28-235 Cherokee 235 28-10001 thru 28-11378, 28-7110001 thru 28-7210023,
28E-11, 28-7310001 thru 28-7710089
PA-28-151 Cherokee Warrior 28-7415001 thru 28-7715314
PA-28-161 Cadet 2841001 thru 2841365
PA-28-161 Warrior III 2816110 thru 2842420
PA-28-181 Archer II 28-7690001 thru 28-8690056, 28-8690061,
28-8690062, 2890001 thru 2890205
PA-28-181 Archer III 2890206 thru 2890231, 2843001 and up
PA-28-181 Pilot 100i 2881041, 28020001 and up
PA-28-201T Turbo Dakota 28-7921001 thru 28-7921095
PA-28R-180 Arrow 28R-30002 thru 28R-31270,
28R-7130001 thru 28R-7130013
PA-28R-200 Arrow 28R-35001 thru 28R-35820,
28R-7135001 thru 28R-7135229
PA-28R-200 Arrow II 28R-7235001 thru 28R-7635545
PA-28R-201 Arrow III 28R-7737002 thru 28R-7837317, 2837001 thru 2837061
2844001 thru 2844185
PA-28RT-201 Arrow IV 28R-7918001 thru 28R-8218026
PA-28R-201T Turbo Arrow III 28R-7703001 thru 28R-7803373,
2803001 thru 2803012
PA-28RT-201T Turbo Arrow IV 28R-7931001 thru 28R-8631005,
2831001 thru 2831038
PA-28-236 Dakota 28-7911001 thru 28-8611008, 2811001 thru 2811050
PA-32-260 Cherokee Six 260 32-1 thru 32-14, 32-16 thru 32-20, 32-22 thru 32-1297,
32-7100001 thru 32-7800008
ATA/JASC: 5720
(OVER)
SERVICE LETTER NO. 1327E PAGE 2 of 7
PA-32-300 Cherokee Six 300 32-15, 32-21, 32-40000 thru 32-40974,
32-7140001 thru 32-7940290
PA-32S-300 Cherokee Six Seaplane 32S-15, 32S-40000 thru 32S-40974,
32S-7140001 thru 32S-7240137
PA-32R-300 Lance 32R-7680001 thru 32R-7880068
PA-32RT-300 Lance II 32R-7885002 thru 32R-7985106
PA-32RT-300T Turbo Lance II 32R-7787001, 32R-7887002 thru 32R-7987126
PA-32-301 Saratoga 32-8006002 thru 32-8606023,3206001 thru 3206019,
3206042 thru 3206044,3206047,
3206050 thru 3206055, 3206060
PA-32-301T Turbo Saratoga 32-8024001 thru 32-8424002
PA-32-301FT Piper 6X 3232001 thru 3232074
PA-32-301XTC Piper 6XT 3255001 thru 3255051
PA-32R-301 Saratoga SP 32R-8013001 thru 32R-8613006,
3213001 thru 3213028, 3213020 thru 3213041
PA-32R-301 Saratoga II HP 3213029, 3213042 thru 3213103,
3246001 thru 3246244
PA-32R-301T Turbo Saratoga SP 32-8029001 thru 32-8629008,
3229001 thru 3229003
PA-32R-301T Saratoga II TC 3257001 thru 3257493
PA-34-200 Seneca 34-E4, 34-7250001 thru 34-7450220
PA-34-200T Seneca II 34-7570001 thru 34-8170092
PA-34-220T Seneca III 34-8133001 thru 34-8633031,
3433001 thru 3433172,
3448001 thru 3448037
PA-34-220T Seneca IV 3448038 thru 3448079,
3447001 thru 3447029
PA-34-220T Seneca V 3449001 thru 3449514
COMPLIANCE TIME: Initial compliance with Part I is to coincide with the next regularly scheduled
maintenance event, but not to exceed the next 50 hours time in service.
Thereafter, recurring compliance with Part II is required at an interval of 50 hours
time in service.
Compliance with Part III is required upon discovery of cracks in the wing skin pan.
APPROVAL: The engineering aspects of this service document have been shown to comply
with the applicable Federal Aviation Regulations and are FAA approved.
PURPOSE: Cracks may be discovered in the doublers (aka wing skin pan) that reinforce
the wing skin, localized around the wing walkway. Aircraft with this condition are
considered airworthy and may continue to operate, provided that a recurring
inspection is performed on the adjacent upper wing skin. However, cracks may
appear in areas normally obscured by the wing walkway material. This service
letter provides a modification to the wing walkway by removing and replacing part
of the wing walkway material to facilitate the required recurring inspection.
SERVICE LETTER NO. 1327E PAGE 3 of 7
INSTRUCTIONS:
Part I. Initial Inspection
1. Locate the wing skin pan, as shown in Figure 1.
2. Inspect the pan from below for cracks.
• If cracks are found in the pan, proceed to Part III.
• If no cracks are found, no modification is required at this time.
• Make a logbook entry documenting compliance with Part I of this service letter.
Part II. Recurring Inspection
1. If the modification described in Part III of this service letter has not been performed, locate and inspect the pan
from below for cracks, as shown in Figure 1. Otherwise, proceed to step 2.
• If cracks are found in the wing skin pan, proceed to Part III.
• If no cracks are found, no modification is required at this time. Proceed to step 3.
2. If the modification described in Part III has been performed on this aircraft, inspect the wing skin where the
clear tape has been applied.
• Verify there is no cracking/damage in the wing skin local to the walkway.
• Verify there is no permanent contour deformation in the wing skin.
If cracks or other damage are discovered in the wing skin, replacement of the wing skin and doublers is
required.
3. Make a logbook entry documenting the external inspection of wing walk area per Part II of this service letter.
Part III. Modification
1. Locate the wing walk, as shown in Figure 2.
2. Remove two (2) inches of wing walk material at the location indicated in Figure 2. While the wing walk material
is removed, inspect the wing skin for cracks. If cracks are found, replacement of the wing skin and pan is
required. Otherwise proceed to step 3.
3. Install a two (2) inch wide strip of 3M Safety-Walk clear wingwalk tape, 3M ID 70070548980, or equivalent
transparent slip-resistant wing walk tape, where the original wing walk material was removed. Refer to the
manufacturer for installation instructions.
4. Make a logbook entry documenting compliance with Part III of this service letter.
SERVICE LETTER NO. 1327E PAGE 4 of 7
DETAIL A
PA-28-181 ARCHER
LOOKING DOWN AT AIRCRAFT
(OTHER MODELS SIMILAR)
DETAIL B
DETAIL A
Figure 1 (Sheet 1 of 2)
Wingwalk Inspection Areas
SERVICE LETTER NO. 1327E PAGE 5 of 7
DETAIL D
AFT
UP
VIEW C–C
WINGWALK ASSEMBLY
DETAIL B LOOKING OUTBOARD
WINGWALK ASSEMBLY
LOOKING DOWN
(COMPONENTS REMOVED FOR CLARITY)
WING SKIN
DOUBLER
DETAIL D
Figure 1 (Sheet 2 of 2)
Wingwalk Inspection Areas
SERVICE LETTER NO. 1327E PAGE 6 of 7
REMOVE 2 INCHES OF WING INSTALL 2 INCHES OF CLEAR
WALK MATERIAL FROM EDGE WING WALK TAPE
BEFORE AFTER
Figure 2
Wingwalk Modifcation
SERVICE LETTER NO. 1327E PAGE 7 of 7
MATERIAL REQUIRED: Per aircraft:
• One (1) each, 3M Safety-Walk Clear Wingwalk Tape, 3M ID 70070548980, or
equivalent transparent, slip-resistant, wing walk tape, procure locally.
• On condition, Wingwalk Assembly. Refer to the appropriate Aircraft Parts
Catalog (APC) for part numbers.
AVAILABILITY OF PARTS: Procure Locally or Your Piper Approved Service Center as appropriate–
Find your local service center at https://www.piper.com/
EFFECTIVITY DATE: This service letter is effective on May 15, 2024.
SUMMARY: Please contact your Piper Approved Service Center to make arrangements
for compliance with this service letter in accordance with the compliance time
indicated.
NOTE: Please notify the factory of any address/ownership corrections. Changes should include aircraft model,
serial number, and current owner’s name and address.
Corrections and/or changes should be directed to:
PIPER AIRCRAFT, INC.
Attn: Customer Service
2926 Piper Drive
Vero Beach, FL 32960
or:
CustomerService@piper.com
Please include in subject line: “Aircraft ownership update”
