# SDR IPXA2024100292856

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 1, 2024
- Submitted: October 2, 2024
- Operation: Air carrier
- Aircraft: [N253UP](https://openairdocs.org/aircraft/N253UP), registered now
- Make and model: Doug MD-11F
- Registry model: [Doug MD-11F](https://openairdocs.org/model/mcdonnell-douglas-md-11f) (OpenAirDocs)
- Aircraft serial: 48439
- Aircraft time: 80,584 hours, 18,722 cycles
- System (JASC): [7320 · Fuel Controlling System](https://openairdocs.org/jasc/7320)
- Part: Hmu
- Condition: Malfunctioned
- Location: Nr 2 Engine
- Stage of operation: DE
- How discovered: O
- Nature of condition: J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/IPXA2024100292856

## Discrepancy

ON DESCENT AT 210 KTS LVL 2 ENG 3 RPM LO ALERT. ENG 3 N2 ROLLED BACK TO 32% FOR 30 SECONDS AND THEN RECOVERED AND OPERATED NORMALLY REST OF FLT C/W RII REQUIREMENTS REFERENCE GMM 04-02/71, VERIFIED HMU INSTALLATION IAW MD11 MM 73-21-01. OPEN

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