Flight crew diverts due to mechanical difficulties.

Attributes
ACN	548638
Time
Date	200205
Day	Tue
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzzz.airport
State Reference	FO
Altitude	msl single value : 11600
Environment
Flight Conditions	VMC
Light	Dusk
Aircraft 1
Controlling Facilities	artcc : zzzz.artcc tower : zzzz.tower
Operator	common carrier : air carrier
Make Model Name	Learjet 36
Operating Under FAR Part	Part 91
Navigation In Use	other
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 8700 flight time type : 700
ASRS Report	548638
Person 2
Affiliation	other
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : commercial pilot : instrument
Experience	flight time last 90 days : 60 flight time total : 405 flight time type : 30
ASRS Report	548639
Events
Anomaly	aircraft equipment problem : less severe other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : gear door indicator other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance controller : provided flight assist flight crew : landed as precaution flight crew : diverted to another airport
Consequence	other
Supplementary
Problem Areas	Aircraft Environmental Factor
Primary Problem	Aircraft

Narrative:

On a flight from anchorage alaska to ZZZZ1 first officer, we got 2 red lights on the landing gear doors at altitude, the airplane was not able to maintain altitude and airspeed. I diverted the airplane to ZZZZ first officer to inspect the airplane, we had a mechanic look at the gear and couldn't find any problem. We flew back to anchorage, with medical crew on board. Where we had the airplane inspected by a FAA repair station even, with a ferry permit I did not feel comfortable leaving the medical crew in a hostile environment. Callback conversation with reporter revealed the following information: reporter stated that possible cold temperature at high latitudes/high altitude caused micro switches to freeze and gear doors to open slightly. The increased drag required a descent and divert.

Original NASA ASRS Text

Title: FLT CREW DIVERTS DUE TO MECHANICAL DIFFICULTIES.

Narrative: ON A FLT FROM ANCHORAGE ALASKA TO ZZZZ1 FO, WE GOT 2 RED LIGHTS ON THE LNDG GEAR DOORS AT ALTITUDE, THE AIRPLANE WAS NOT ABLE TO MAINTAIN ALTITUDE AND AIRSPEED. I DIVERTED THE AIRPLANE TO ZZZZ FO TO INSPECT THE AIRPLANE, WE HAD A MECHANIC LOOK AT THE GEAR AND COULDN'T FIND ANY PROBLEM. WE FLEW BACK TO ANCHORAGE, WITH MEDICAL CREW ON BOARD. WHERE WE HAD THE AIRPLANE INSPECTED BY A FAA REPAIR STATION EVEN, WITH A FERRY PERMIT I DID NOT FEEL COMFORTABLE LEAVING THE MEDICAL CREW IN A HOSTILE ENVIRONMENT. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: RPTR STATED THAT POSSIBLE COLD TEMP AT HIGH LATITUDES/HIGH ALT CAUSED MICRO SWITCHES TO FREEZE AND GEAR DOORS TO OPEN SLIGHTLY. THE INCREASED DRAG REQUIRED A DSCNT AND DIVERT.

Data retrieved from NASA's ASRS site as of July 2007 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.