Service difficulty report · Door · Boeing 7377H4

Difficulty date
June 10, 2022
Submitted
July 25, 2022
Operation
Air carrier
Aircraft
N478WN
Make and model
Boeing 7377H4
Aircraft serial
33989
Aircraft time
60,197 hours, 35,659 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

TOILET SERVICE DOOR 145AL HAS CORROSION ON UPPER AND LWR SURFACES ALONG IB EDGE. 8-1 / [01] REMOVED CORROSION AT TOILET SERVICE DOOR 145AL ON UPPER AND LWR SURFACES ALONG IB EDGE AS PER B737 SRM51-10-02-0G-0;[02] VERIFIED 1.;[03] PERFORMED UT THICKNESS ON REWORKED AREA IAW NDTM PART 4; 51-00-00 PROCEDURE 3.<BR> MINIMUM FOUND OF NON CHEM-MILLED AREA : 0.092'<BR>MINIMUM FOUND OF CHEM-MILLED AREA : 0.038'<BR> <BR>[OLYMPUS 27MG; B/C 172139; CALIB.DUE-4/23];[04] ORIGINAL MAT. 0.060' AT CHEM MILLD MAT. REMOVED 0.022' MAT REMAINING 0.038' FOUND TO BE OUT OF LIMITS AS PER B737 SRM 52-40-01-1A-4;[05] VERIFIED 4.;[06] REMOVED AND REPLACED TOILET SERVICE DOOR 145AL IAW 737-700 AMM 52-49-07-000-801 AND AMM 52-49-07-400-801.;[07] VERIFIED STEP#6 OK TOP COAT.;[08] PAINTED TOILET SERVICE DOOR 145AL IAW B737AMM 51-21-73-270-803.;[09] VERIFIED AND INSPECTED STEP#8.

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