# SDR DALA1114309877

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 15, 2011
- Submitted: March 1, 2011
- Operation: Air carrier
- Aircraft: N786NC
- Make and model: Doug DC-9-51
- Registry model: [Doug DC-9-51](https://openairdocs.org/model/mcdonnell-douglas-dc-9-51) (OpenAirDocs)
- Aircraft serial: 48148
- Aircraft time: 68,643 hours, 62,328 cycles
- System (JASC): [5414 · Nacelle/Pylon, Plate/Skin](https://openairdocs.org/jasc/5414)
- Part: Doubler
- Condition: Cracked
- Location: Nr 1 Pylon
- Stage of operation: IN
- How discovered: 9
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/DALA1114309877

## Discrepancy

NR 1 PYLON APRON LOWER AFT AREA FWD OF AFT ENGINE MOUNT, INTERNAL DOUBLER CRACKED AT LWR RADIUS 60-11.  REMOVED DOUBLER IAW SRM 51-30-2, PG 24, PARA 1.  FABRICATED DOUBLER IAW SRM 54-01, PG 10, FIG 2.  TREATED AND PRIMED DOUBLER IAW DC9 SRM 51-10-3, PG 40, PARA 21 AND SRM 51-10-3, PG 31, PAR 14.  INSTALLED DOUBLER IAW SRM 51-30-2, PG 24, PARA 7.

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