Service difficulty report · Door · Boeing 7377H4

Difficulty date
June 4, 2021
Submitted
July 16, 2021
Operation
Air carrier
Aircraft
N489WN
Make and model
Boeing 7377H4
Aircraft serial
33855
Aircraft time
54,253 hours, 32,244 cycles
Part
Door
Condition
Corroded
Location
Cabin
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

LAV SERVICE DOOR HAS CORROSION AROUND BONDING JUMPER STUD ON THE INTERNAL SIDE OF DOOR SIDE ; / [01] EVALUATED CORROSION ON LAV SERVICE DOOR; FOUND 0.020 REMOVED FROM ORIG 0.060 IN 1'X1' AREA FOUND TO BE OUT OF LIMITS PER SRM 52-40-01-1A-4 USING MICROMETER P/N 4566A S/N UNKNOWN; [02] VERIFIED CORROSION ON LAV SERVICE DOOR; FOUND 0.020 REMOVED FROM ORIG 0.060 IN 1'X1' AREA FOUND TO BE OUT OF LIMITS PER SRM 52-40-01-1A-4 USING MICROMETER P/N 4566A S/N UNKNOWN; [03] REMOVED AND REPLACED LAV SERVICE DOOR PER AMM 52-49-09-000-801 AND 52-49-09-400-801. PERFORMED BOND CHECK PER STEP 3.C.(1).(E).1) WITH BOND METER; TOOL ID: ATS1256; S/N: DC003960. BOND CHECK GOOD. PERFORMED PANEL FIT CHECK PER AMM 52-49-09-000-802; FIT CHECK GOOD.; [04] VERIFIED REMOVED AND REPLACED LAV SERVICE DOOR PER AMM 52-49-09-000-801 AND 52-49-09-400-801. PERFORMED BOND CHECK PER STEP 3.C.(1).(E).1) WITH BOND METER; TOOL ID: ATS1256; S/N: DC003960. BOND CHECK GOOD. PERFORMED PANEL FIT CHECK PER AMM 52-49-09-000-802; FIT CHECK GOOD.

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