# SDR AALA20170208012

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: February 7, 2017
- Submitted: February 8, 2017
- Operation: Air carrier
- Aircraft: [N863NN](https://openairdocs.org/aircraft/N863NN), registered now
- Make and model: Boeing 737823
- Aircraft serial: 30903
- Aircraft time: 20,159 hours, 7,868 cycles
- Engine: Cfmint CFM567B243
- Engine time: 20,159 hours, 7,868 cycles
- System (JASC): [7520 · Engine Cooling System](https://openairdocs.org/jasc/7520)
- Part: Control Valve
- Part number: 32911866
- Part serial: GETV7785
- Condition: Faulty
- Location: Lt Engine
- Stage of operation: TX
- How discovered: O
- Nature of condition: K
- Precautionary procedure: E
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/AALA20170208012

## Discrepancy

AIRCRAFT WAS GROUNDED. EMERGENCY DECLARED. FLL-DFW FLIGHT. ON TAXI, THE LEFT ENGINE WAS LEAKING FUEL. SHUTDOWN ENGINE AND SHUTOFF BOOST PUMPS. AIRCRAFT TOWED TO GATE. REMOVED AND REPLACED NR 1 HIGH PRESSURE TURBINE ACTIVE CLEARANCE CONTROL VALVE IAW AMM 75-21-00. LEAK AND OPERATIONAL CHECK GOOD.

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