# SDR ASAA2019022528537

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 25, 2019
- Submitted: March 11, 2019
- Operation: Air carrier
- Aircraft: N318AS
- Make and model: Boeing 737990
- Aircraft serial: 30018
- Aircraft time: 55,891 hours, 22,184 cycles
- System (JASC): [5312 · Fuselage Main, Bulkhead](https://openairdocs.org/jasc/5312)
- Part: Bulkhead
- Part number: 111A15121
- Condition: Cracked
- Location: Lt Mlg Ww
- Stage of operation: IN
- How discovered: V
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ASAA2019022528537

## Discrepancy

LT WW FWD BULKHEAD STA 663 LOWER WEB LBL20 ACM EXHAUST OUTLET CUT OUT FLANGE IS CRACKED. GROUNDED - YES. REMOVED AND REPLACED LT WW FWD BULKHEAD STA. 663 LOWER WEB LBL 20 ACM EXHAUST OUTLET CUT OUT FLANGE IAW SRM 51 40 02 0G 0 PG 3 STEP 4.E AND PG 2 STEP 4.B.

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