SDR ASAA2024121955037

Service difficulty report · Support · Boeing 737990ER

Difficulty date: December 19, 2024
Submitted: January 7, 2025
Operation: Air carrier
Aircraft: N236AK
Make and model: Boeing 737990ER
Aircraft serial: 36351
Aircraft time: 28,590 hours, 9,307 cycles
System (JASC): 5320 · Fuselage Miscellaneous Structure
Part: Support
Part number: 143A948534
Condition: Corroded
Location: Zone 100
Stage of operation: IN
How discovered: V
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

FWD CARGO PIT, AFT R/H BULKHEAD SUPPORT RAIL CORRODED. GROUNDED - YES. EVALUATED ORIGINAL THICKNESS : .071", REMOVED: .071", REMAINING: .000" 100% MAT LOSS FOUND TO BE OUT OF LIMITS IAW B737-900ER SRM 53-30-08. REMOVED & REPLACED AFT R/H BULKHEAD SUPPORT RAIL IAW B737-900ER SRM 51-40-02, B737-900ER SRM 51-40-05 & BAC DWG:143A7902, REV:U P/N:143A9485-34 PO:0.