Service difficulty report · Support Angle · Boeing 7377H4

Difficulty date
June 30, 2021
Submitted
August 11, 2021
Operation
Air carrier
Aircraft
N750SA
Make and model
Boeing 7377H4
Aircraft serial
29802
Aircraft time
75,691 hours, 44,551 cycles
Part
Support Angle
Condition
Corroded
Location
Bs 1143
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 SUPPORT ANGLE AT APU COMPARTMENT BS1143 LBL19; 23' BELOW LOWER HORIZONTAL DECK. ; / [01] REMOVED DAMAGE IAW SRM 51-10-02; [02] INSPECTED AND VERIFIED REMOVED DAMAGE IAW SRM 51-10-02; [03] UT THICKNESS TESTED BLENDED AREA PER 737NDT PART 4 51-00-00 PROCEDURE 2. LOWEST REMAINING THICKNESS IS .060'. ADJACENT THICKNESS IS .063'. CAL ID ATS2342 S/N 190848504; [04] APPLIED CHEMICAL CONVERSION COATING PER AMM 51-21-41-370-802 AND BMS 10-11 PRIMER PER AMM 51-21-72-370-804.; [05] NO FURTHER ACTION REQUIRED; [06] VERIFIED CONVERSION COATING ADN PRIMER APPLICATION; [07] COMPLETE; [08] INSPECTION COMPLETE

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