# SDR ABXA20250909224

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: September 9, 2025
- Submitted: September 12, 2025
- Operation: Air carrier
- Aircraft: [N1321A](https://openairdocs.org/aircraft/N1321A), registered now
- Make and model: Boeing 767306
- Aircraft serial: 27957
- Aircraft time: 98,143 hours, 24,503 cycles
- System (JASC): [7600 · Engine Controls](https://openairdocs.org/jasc/7600)
- Part: Hmu
- Part number: 442634
- Part serial: BECJ3798
- Condition: Inoperative
- Location: Zone 600
- Stage of operation: DE
- How discovered: V
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/ABXA20250909224

## Discrepancy

DURING DESCENT, ON THE ARRIVAL TO MIA,  L & R ENG CONTROL STATUS MESSAGES. RIGHT ENGINE WOULD NOT ACCELERATE FROM IDLE. DECLARED EMERGENCY AT APPROX. 1930Z AND LANDED AT MIA.  AFTER LANDING L & R ENGINE CONTROL EICAS MESSAGES APPEARED.  MIA FIRE DEPARTMENT CHECKED A/C, EVERYTHING LOOKED NORMAL.  REMOVED AND REPLACED M644EEC DISCRETE PRINTED CIRCUIT CARD, PER B767-300 AMM 73-21-11 AND REMOVED & REPLACED RIGHT ENG HMU IN REF WITH B767 AMM 73-21-14. OPS CHECK OK. NO LEAKS. A/C REMAINS NO ETOPS AND RETURNED AC TO SERVICE.

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