SDR SWAA2021101319779

Service difficulty report · Strap · Boeing 737752

Difficulty date: September 18, 2021
Submitted: October 13, 2021
Operation: Air carrier
Aircraft: N7843A
Make and model: Boeing 737752
Aircraft serial: 35786
Aircraft time: 47,875 hours, 24,909 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Strap
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 ON STRAP IN AFT CARGO BAY BS 809, RBL 19, WL 159. REMOVED CORROSION ON STRAP IAW SRM 51-10-02-0G-0 MEASURE L=1.6'X W=1.4'X D=0.025' MAX. MAT LOSS IS 0.025'. REMAINING THICKNESS IS 0.055'; ORIGINAL THICKNESS IS 0.080' FOUND TO BE OUT OF LIMITS. REWORKED AREA IAW SRM53-60-15-1A-1, ALLOWABLE DAMAGE, PARAG. 4.G 3 DETAIL B, FIG 103. NEW STRAP LOCATED AND DRILLED IAW SRM 51-40-05-OG-0, DWG 146A8128. INSTALLED STRAP IAW SRM 51-40-02, DWG 146A0081, AND DWG 146A8120.