# SDR 95UAL900161

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 29, 1995
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N148UA
- Make and model: Boeing 747SP-21
- Registry model: [Boeing 747SP-21](https://openairdocs.org/model/boeing-747sp-21) (OpenAirDocs)
- Aircraft serial: 21648
- Engine: Pwa JT9D7A
- System (JASC): [5400 · Nacelle/Pylon Structure](https://openairdocs.org/jasc/5400)
- Part: Spar
- Condition: Cracked
- Location: Nac Sta 210-216
- Stage of operation: IN
- Nature of condition: O
- Precautionary procedure: K
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/95UAL900161

## Discrepancy

DURING NR 2 ENGINE CHANGE, FOUND NR 2 LOWER HORIZONTAL SPAR WITH 6 INCH CRACK.  CRACK WAS LOCATED BETWEEN NAC STA 210 AND 216, ADJACENT TO INBOARD CHORD.  REPAIRED PER ADAPTION OF SRM 54-10-03.

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