A B737-300 captain reported unsafe gear indication after extension on final approach. A normal landi...

Attributes
ACN	848773
Time
Date	200908
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Aircraft 1
Make Model Name	B737-300
Operating Under FAR Part	Part 121
Flight Phase	Initial Approach
Flight Plan	IFR
Component
Aircraft Component	Indicating and Warning - Landing Gear
Person 1
Function	Captain Pilot Flying
Experience	Flight Crew Last 90 Days 25 Flight Crew Total 17000 Flight Crew Type 8000
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

Selected gear down. Left main had a red unsafe indication no green down locked. Cycled gear with same indication so did go around. Did appropriate checklists and manually extended gear but still had an unsafe indication. First officer went back to make visual of gear down locks and could not see left main down lock marks because view port was obscured by water condensation. Contacted dispatch and maintenance who had us check circuit breakers and gear override trigger. Did flyby of tower who said gear appeared down. Completed checklists had flight attendants do a cabin preparation and had rescue equipment standing by and made a normal landing without incident.

Original NASA ASRS Text

Title: A B737-300 Captain reported unsafe gear indication after extension on final approach. A normal landing was made after a tower flyby verified the gear appeared down.

Narrative: Selected gear down. Left main had a red unsafe indication no green down locked. Cycled gear with same indication so did go around. Did appropriate checklists and manually extended gear but still had an unsafe indication. First officer went back to make visual of gear down locks and could not see left main down lock marks because view port was obscured by water condensation. Contacted dispatch and maintenance who had us check circuit breakers and gear override trigger. Did flyby of tower who said gear appeared down. Completed checklists had flight attendants do a cabin preparation and had rescue equipment standing by and made a normal landing without incident.

Data retrieved from NASA's ASRS site as of April 2012 and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

A B737-300 captain reported unsafe gear indication after extension on final approach. A normal landing was made after a tower flyby verified the gear appeared down.