Service difficulty report · Access Panel · Boeing 7377H4

Difficulty date
April 11, 2022
Submitted
May 3, 2022
Operation
Air carrier
Aircraft
N924WN
Make and model
Boeing 7377H4
Aircraft serial
36628
Aircraft time
45,894 hours, 27,583 cycles
Part
Access Panel
Condition
Corroded
Location
Fuselage
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

CORROSION ** AFT FUS. TOILET SERVICE COMPARTMENT. ACCESS PANEL 145AL AT BONDING LEAD ATTACHED POINT / [01] REMOVED BONDING LEAD SCREW FOR ACCESS AT TOILET SERVICE ACCESS PANEL 145AL PER BOEING 737-700 SRM 51-40-02-0G-0.;[02] REMOVED CORROSION AT ACCESS PANEL 145AL AT BONDING LEAD ATTACH POINT. ORIGINAL MATERIAL THICKNESS 0.070'; MATERIAL LOSS 0.030'; REMAINING MATERIAL THICKNESS 0.040'. FOUND OUT OF LIMITS PER 737-700 SRM 52-40-01-1A-4 PARR. 4. FIG. 103. DETAIL D. TOOL MICROMETER B/C 11369 CALIBRATION DUE DATE 08-SEP-2022.;[03] VERIFIED STEP 1; 2;[04] REMOVED AND REPLACED AFT FUS TOILET SERVICE COMPARTMENT ACCESS PANEL145AL; IN REFERENCE B-737 SRM 51-40-02-0G-0. PENDING FOR PAINT AND PLACARD;[05] PAINTED TOILET SERVICE PANEL 145AL PER B737-700 AMM 51-21-72-370-804 / 51-21-73-370-803. INSTALLED PLACARDS AS PER B737-700 AMM 11-00-00-201.;[06] VERIFIED REPLACEMENT & PAINT

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