# SDR EIA2006075

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: May 12, 2006
- Submitted: May 22, 2006
- Operation: Air carrier
- Aircraft: N486EV
- Make and model: Boeing 747 212B
- Registry model: [Boeing 747 212B](https://openairdocs.org/model/boeing-747-212b) (OpenAirDocs)
- Aircraft serial: 20888
- Aircraft time: 86,734 hours, 20,450 cycles
- Engine: Pwa JT9D7F
- Engine time: 8,147 hours, 1,787 cycles
- System (JASC): [7600 · Engine Controls](https://openairdocs.org/jasc/7600)
- Part: Sensor
- Condition: Damaged
- Location: Speed Control
- Stage of operation: TX
- How discovered: O
- Nature of condition: R, J
- Precautionary procedure: O
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/EIA2006075

## Discrepancy

AT FL 380, PWR WAS REDUCED FOR SPEED CONTROL AND WAS NOT RESPONSIVE UNTIL REACHING FL 250.  REPLACED NR 3 TT2 SENSOR AS PER MM 72-21-04, OPS CHK GOOD PER MM 71-00-00 TEST 3.

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