# SDR TWAA9807102

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 18, 1998
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N997Z
- Make and model: Doug DC-9-32
- Registry model: [Doug DC-9-32](https://openairdocs.org/model/mcdonnell-douglas-dc-9-32) (OpenAirDocs)
- Aircraft serial: 47029
- System (JASC): [5412 · Nacelle/Pylon, Bulkhead/Firewall](https://openairdocs.org/jasc/5412)
- Part: Firewall Angle
- Condition: Cracked
- Location: Nr 2 Pylon
- 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/TWAA9807102

## Discrepancy

MCI - DURING OP 15 MAINTENANCE CHECK FOUND ON NR 2 PYLON AFT FIREWALL A ONE INCH CRACK IN UPPER FLANGE, AT OTBD END APPROX 40 INCHES AFT OF AFT ENGINE MOUNT.  REPAIRED CRACKED ANGLE UPPER FLANGE ON AFT FIREWALL PER SRM 53-01.  (X)

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