# SDR UALA2011040401617

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: April 3, 2011
- Submitted: April 27, 2011
- Operation: Air carrier
- Aircraft: [N171UA](https://openairdocs.org/aircraft/N171UA), registered now
- Make and model: Boeing 747422
- Aircraft serial: 24322
- Aircraft time: 81,199 hours, 9,697 cycles
- Engine: Pwa PW4056
- System (JASC): [5420 · Nacelle/Pylon Miscellaneous Structure](https://openairdocs.org/jasc/5420)
- Part: Acoustic Panel
- Condition: Damaged
- Location: Nacelle
- 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/UALA2011040401617

## Discrepancy

ON ARRIVAL INNER ACOUSTIC PANEL DAMAGED BETWEEN 3 AND 4 O'CLOCK POSITION 4"X 2"X .25" DENT-PUNCTURE.  AREA REPAIRED PER MM 54-00-01 REPAIR 2 AND AREA TAPED.

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