# SDR ASAA2021052535028

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 25, 2021
- Submitted: June 7, 2021
- Operation: Air carrier
- Aircraft: [N486AS](https://openairdocs.org/aircraft/N486AS), registered now
- Make and model: Boeing 737990ER
- Aircraft serial: 44107
- Aircraft time: 21,366 hours, 6,852 cycles
- System (JASC): [5320 · Fuselage Miscellaneous Structure](https://openairdocs.org/jasc/5320)
- Part: Web
- Part number: 65400058
- Condition: Corroded
- Location: Bs 440-480
- 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/ASAA2021052535028

## Discrepancy

FWD CARGO PIT, CARGO DOOR THRESHOLD WEB IS CORRODED. GROUNDED - YES. REMOVED CORROSION ON WEB. ORIG THICKNESS .045 PER B737-900ER SRM 53-30-15-OI-1; REMOVED .008 MATERIAL; REMAINING MATERIAL .037 TO BE OUT OF LIMITS PER B737-900ER SRM 53-30-15-1A-1. TOOL #T8224K.LOCATED AND DRILLED NEW WEB PER B737-400ER SRM 51-40-05. REMOVED OLD WEB PER B737-900ER SRM 51-40-02. INSTALLED NEW NUTPLATES PER B737-900ER SRM 51-40-02. INSTALLED NEW WEB IAW B737-900ER DWG 143A8120, REV T.

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