# SDR TWAA0005808

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: November 29, 1999
- Submitted: April 14, 2000
- Operation: Air carrier
- Aircraft: [N925L](https://openairdocs.org/aircraft/N925L), registered now
- 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: 47357
- Aircraft time: 75,588 hours, 80,116 cycles
- System (JASC): [5400 · Nacelle/Pylon Structure](https://openairdocs.org/jasc/5400)
- Part: Angle
- Condition: Cracked
- Location: Nr 2 Pylon
- 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/TWAA0005808

## Discrepancy

DURING OP 16 MAINT CHECK, NUMBER 2 PYLON INTERIOR, O/B VERTICAL ANGLE WAS CRACKED AT BOTTOM, JUST AFT OF 13TH STAGE PNEUMATIC DUCT.  DIRECTLY BELOW FIRE SPRAY TUBE.  REPAIRED FLANGE USING 2 FABRICATED DOUBLERS OF 0.012 ALUMINUM PER SRM 53-01, PAGE 10 FIG 2, SHEET 4.

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