Service difficulty report · None · Boeing 737

Difficulty date
January 9, 2022
Submitted
April 26, 2022
Operation
Air carrier
Aircraft
N7845A
Make and model
Boeing 737
Aircraft serial
29366
Aircraft time
44,940 hours, 29,285 cycles
Part
None
Part number
145AL
Condition
Corroded
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

SUPPLEMENTAL INFORMATION: **CORROSION** WASTE TANK SERVICE DOOR 145AL; AREA AROUND BONDING WIRE STUD AND FWD HINGE; WITH CORROSION. ; / [01] REMOVED CORROSION AT WASTE TANK SERVICE DOOR 145AL AREA AROUND BONDING WIRE STUD AND FWD HINGE AS PER B7373-700 SRM 51-10-02-0G-0; [02] VERIFIED STEP 1; [03] FOUND CORROSION ON EXISTING REPAIR AT WASTE TANK SERVICE DOOR 145AL ; OUT OF LIMIT AS PER REF B737-700 SRM 52-40-01-1A-4; [04] APPLIED TOP COAT ON WASTE TANK SERVICE DOOR 145AL REF B 737 AMM 51-21-73-370-803; [05] VERIFIED. STEP 4; [06] RECEIVED AND INSTALLED NEW WASTE TANK SERVICE DOOR #145 AL IN IAW AMM 52-49-07-400-801 AND 51-40-02-0G-0; [07] CHECKED THE ELECTRICAL RESISTANCE USING BONDING METER B/C 168692 IN IAW 52-49-07-400-801; [08] APPLIED CIC INSIDE THE DOOR 145 AL IN IAW AMM 51-21-91-620-801; [09] REMOVED AND REPLACED WASTE TANK SERVICE DOOR # 145 AL IN IAW AMM 52-49-07-400-801 AND 51-40-02-0G-0; [10] VERIFIED 7-8.; [11] INSTALLED ON PANEL 145AL (WASTE TANK SERVICE DOOR) STENCIL REF B 737 AMM 20-10-61-400-801; [12] LATE ENTRY: VERIFIED STEPS 3;6 AND 9. <BR>VERIFIED STEP 11.