# SDR AALA202106229012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: June 13, 2021
- Submitted: June 23, 2021
- Operation: Air carrier
- Aircraft: [N925UY](https://openairdocs.org/aircraft/N925UY), registered now
- Make and model: Airbus A321-231
- Registry model: [Airbus A321-231](https://openairdocs.org/model/airbus-a321-231) (OpenAirDocs)
- Aircraft serial: 6613
- Aircraft time: 19,726 hours, 7,609 cycles
- System (JASC): [3240 · Landing Gear Brake System](https://openairdocs.org/jasc/3240)
- Part: Tachometer
- Part number: C201050002
- Part serial: 70513
- Condition: Defective
- Location: Lt Mlg
- Part time: 19,725 hours, 7,608 cycles
- Stage of operation: LD
- How discovered: O
- Nature of condition: M
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA202106229012

## Discrepancy

AIRCRAFT WAS GROUNDED: AFTER LANDING LEFT MAIN BRAKE TEMP INCREASED RAPIDLY UPON GATE ARRIVAL BOTH LEFT MAIN TIRES BLEW. PREFORMED INSPECTION OF LEFT MAIN LANDING GEAR AXLE PER AMM 32-11-00-200-007 AND FOUND TO BE WITHIN LIMITS FOR HARDNESS CHECK. REPLACED MAIN LANDING GEAR #1 (AALA202106149012) AND #2 (AALA202106229009) BRAKE ASSEMBLIES PER AMM 32-42-27. REPLACED MAIN LANDING GEAR #1 (AALA202106229010) AND #2 (AALA202106229011) WHEEL ASSEMBLIES PER AMM 32-41-11. REPLACED #1 (AALA202106229012) AND #2 (AALA202106229013) TACHOMETERS PER AMM 32-42-57. REPLACED BRAKE TEMPERATURE MONITOR UNIT (AALA202106229014) PER AMM 32-47-18. A SATISFACTORY OPERATIONAL CHECK OF ALL REPLACED ITEMS AND THE BRAKING SYSTEM WAS ACCOMPLISHED.

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