# SDR C2XA02IA215

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 5, 2002
- Submitted: October 6, 2002
- Operation: Air carrier
- Aircraft: N17524
- Make and model: Emb EMB-135LR
- Registry model: [EMB EMB-135LR](https://openairdocs.org/model/embraer-emb-135lr) (OpenAirDocs)
- Aircraft serial: 145399
- System (JASC): [2120 · Air Distribution System](https://openairdocs.org/jasc/2120)
- Part: Relay
- Part number: M8353616022L
- Condition: Intermittent
- Location: Rt.Relay Panel
- Stage of operation: CR
- How discovered: O
- Nature of condition: E
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/C2XA02IA215

## Discrepancy

IAH-  FLIGHT 3959,THE CREW NOTED THAT THE AIRCRAFT HAS A LIGHT TO MODERATE VIBRATION IN CLIMB (290 KIAS) THROUGH CRUISE (320KIAS).  FELT IN FLOORBOARD, AND, SEAT IN COCKPIT.  NO VIBRATION NOTED ON YOKE.  IAH-  MAINTENANCE INSPECTED THE FORWARD INLET AIRFLOW SHUTOFF VALVE,AND, FOUND THE VALVE TO BE INTERMITTENT.  REMOVED AND REPLACED RELAY K0039 FOR SHUTOFF VALVE TEMP CONTROL.  PERFORMED A OPERATIONAL CHECK, NO DEFECTS NOTED, AND, THE AIRCRAFT WAS APPROVED FOR RETURN TO SERVICE.

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