SDR DHL2001712005

Service difficulty report · Downlock Switch · Boeing 72729

Difficulty date: April 29, 2001
Submitted: April 30, 2001
Operation: Air carrier
Aircraft: N712DH
Make and model: Boeing 72729
Aircraft serial: 19401
System (JASC): 3260 · Landing Gear Position and Warning
Part: Downlock Switch
Condition: Out Of Position
Location: Nlg
Stage of operation: LD
How discovered: O
Nature of condition: N
Precautionary procedure: O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

DURING GEAR EXTENSION, NOSE GEAR INTRANSIT LIGHT AND GEAR DOWN LIGHT DID NOT ILLUMINATE. RAN ABNORMAL PROCEDURE 6.2 67 LIGHT STAYED OUT. VERIFIED NOSE GEAR DOWN THRU VIEWING PORT. AFTER GEAR WAS VERIFIED DOWN AND LOCKED, WHEN POWER WAS REDUCED, GEAR WARNING HORN WENT OFF. REPOSITIONED LOCK SWITCH WIRE BUNDLE MOUNT AND CLAMP, REATTACHED THE SEPARATED WIRES AT THE LOCK SWITCH AND OPS CK'D PER 32-61-71 OK.

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