# SDR 9621846608

- Type: Service difficulty report (as reported; unverified)
- Difficulty date: October 12, 1996
- Submitted: March 26, 2000
- Operation: Air carrier
- Aircraft: N608US
- Make and model: Boeing 747151
- Aircraft serial: 19785
- System (JASC): [3610 · Pneumatic Distribution System](https://openairdocs.org/jasc/3610)
- Part: Pneumatic Syst
- Condition: Malfunctioned
- Location: Rt Wing
- Stage of operation: CL
- Nature of condition: J
- Precautionary procedure: A
- FAA source: FAA Service Difficulty Reporting System (https://sdrs.faa.gov/)
- Page: https://openairdocs.org/sdr/9621846608

## Discrepancy

DURING CLIMB, THE RIGHT WING OVERHEAT LIGHT ILLUMINATED.  FOLLOWED COCKPIT OPERATING MANUAL PROCEDURES AND LIGHT REMAINED ILLUMINATED.  AIRCRAFT RETURNED TO NRT AND LANDED WITHOUT INCIDENT.  REPLACED NR 4 PYLON VALVE, NACELLE ANTI-ICE VALVE CLAMP, LEADING EDGE FLAP DRIVE UNIT AIR INLET DUCT SEAL AND ISOLATION VALVE, OPERATIONAL CHECK GOOD.

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