# SDR FDEA201304090750

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 9, 2013
- Submitted: April 11, 2013
- Operation: Air carrier
- Aircraft: [N972FD](https://openairdocs.org/aircraft/N972FD), registered now
- Make and model: Boeing 757-28A
- Registry model: [Boeing 757-28A](https://openairdocs.org/model/boeing-757-28a) (OpenAirDocs)
- Aircraft serial: 28203
- Aircraft time: 55,509 hours, 17,737 cycles
- System (JASC): [5412 · Nacelle/Pylon, Bulkhead/Firewall](https://openairdocs.org/jasc/5412)
- Part: Shim
- Part number: 311N504312
- Condition: Migrated
- Location: Nacelle Bulkhead
- 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/FDEA201304090750

## Discrepancy

NR 1 PYLON BULKHEAD LOWER LT HAS SHIM MIGRATION AT PPSTA 174.30.  EVALUATED MIGRATED SHIM MAXIMUM MIGRATION IS 0.200, FOUND TO BE WITHIN LIMITS IAW SRM 54-50-90, REPAIR 7. CLASSIFIED AS CATEGORY REPAIR B.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.