Service difficulty report · Skin · Boeing 7377H4

Difficulty date
June 20, 2024
Submitted
August 5, 2024
Operation
Air carrier
Aircraft
N481WN
Make and model
Boeing 7377H4
Aircraft serial
29853
Aircraft time
66,500 hours, 39,674 cycles
Part
Skin
Condition
Corroded
Location
Zn 100 Fus Lower
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CUSTOMER REQUEST-CORROSION PIT IN FUSELAGE SKIN BY FASTENER HOLE BS 907 S-25L. 8-16<[01] REMOVED CORROSION AT FUSELAGE SKIN BY FASTENER HOLE BS 907 S-25L FOUND TO BE WITHIN LIMITS PER REF SRM 53-00-01-1A-1; REMOVED AND INSTALLED NEW FASTENER; TREATED; PRIMED AND TOPCOAT AREA PER REF SRM 51-40-02-0G-0; AMM 51-21-41-370-803 ;AMM 51-21-72-370-804 AND AMM 51-21-73-370-803;[02] CORRECTINGT STEP 1: REMOVED CORROSION AT FUSELAGE SKIN BY FASTNER HOLE BS 907 S-25L FOUND TO BE WITHIN LIMITS PER REF SRM 53-00-01-1A-1; REMOVED AND INSTALLED NEW FASTENER; TREATED; PRIMED AND TOPCOAT AREA PER REF SRM 51-40-02-0G-0; AMM 51-21-41-370-803 ;AMM 51-21-72-370-804 AND AMM 51-21-73-370-803;[03] VERIFIED STEP 2<BR>AUDIT PER MPM 52-02-02

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