# SDR AALA202209272510

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 23, 2022
- Submitted: September 27, 2022
- Operation: Air carrier
- Aircraft: [N450AN](https://openairdocs.org/aircraft/N450AN), registered now
- Make and model: Airbus A300*
- Aircraft serial: 10810
- Aircraft time: 1,734 hours, 444 cycles
- Engine: Cfmint LEAP1A33
- System (JASC): [7520 · Engine Cooling System](https://openairdocs.org/jasc/7520)
- Part: Duct
- Condition: Ruptured
- Location: Zone 400 - Nac/P
- Component: Engine, LEAP1A33
- Component part number: LEAP133G09
- 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/AALA202209272510

## Discrepancy

AIRCRAFT WAS GROUNDED: ON ETOPS WALKAROUND MAINTENANCE FOUND LOOSE PIECES OF HEAT PROOFING STICKING OUT OF THE #1 ENGINE THRUST REVERSER COWLING. UPON FURTHER INSPECTION FOUND THAT THE PNEUMATIC Y DUCT GOING TO THE HIGH PRESSURE TURBINE ACTIVE CLEARANCE CONTROL AND THE LOW PRESSURE TURBINE ACTIVE CLEARANCE CONTROL HAD RUPTURED. MAINTENANCE REPLACED THE Y DUCT PER AMM 75-21-10.

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