Service difficulty report · Strap · Boeing 737

Difficulty date
March 2, 2022
Submitted
March 31, 2022
Operation
Air carrier
Aircraft
N763SW
Make and model
Boeing 737
Aircraft serial
27877
Aircraft time
74,817 hours, 44,183 cycles
Part
Strap
Condition
Corroded
Location
Fwd Cargo
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 ON FWD CARGO BAY DOOR CUTOUT AFT STRAP AT BS 480+13 JUST ABOVE R/H STRINGER 24.(MARKED) CORROSION ON FWD CARGO BAY DOOR CUTOUT AFT STRAP AT BS 480+13 JUST ABOVE R/H STRINGER 24. / [01] SRM 53-30-15-1A-1 HAS BEEN FOUND TO BE APPLICABLE FOR THIS EVALUATION.;[09] REMOVED EDGE BLEND DAMAGE IN AN AREA OF .85L X .11 PART IS 1.23' WIDE. IAW SRM 51-10-02 AND SRM 53-30-15-1A-1 FIG 103 (I) WITH LESS THEN 10% DAMAGE REMOVAL. BLEND IS FOUND TO BE (IN LIMITS) OK TO APPLY CHEMICAL CONVERSION COATING AND PRIME.;[10] FACE BLEND IN AREA OF 1' SQUARE JUST FWD OF EDGE DAMAGE REMOVAL. ORIGINAL THICKNESS IS .142 AND LOWEST IS .139. FACE BLEND FOUND TO BE (IN LIMITS)IAW SRM 53-30-15-1A-1;[11] VERIFIED CORRECTIVE ACTION #9 AND 10; ORIGINAL OUT OF LIMITS AREA WAS BLENDED ON AN EDGE TO REMOVE DAMAGE; SURFACE BLEND IS IN LIMITS;[12] CORRECTION TO LINE 2. MEASUREMENT 10 CHANGE TO 143A8206-10;[13] APPLIED CHEMICAL CONVERSION COATING AND PRIMER IAW SRM 51-20-01;[14] VERIFIED CORRECTIVE ACTION #13