A LJ36 flight crew failed to receive positive gear retracted indications after takeoff. After multip...

Attributes
ACN	1091799
Time
Date	201305
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Learjet 36
Operating Under FAR Part	Part 91
Flight Phase	Takeoff
Flight Plan	IFR
Component
Aircraft Component	Gear Extend/Retract Mechanism
Person 1
Function	Pilot Not Flying First Officer
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 240 Flight Crew Total 34000 Flight Crew Type 2400
Person 2
Function	Captain Pilot Flying
Qualification	Flight Crew Multiengine Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 40 Flight Crew Total 6500 Flight Crew Type 1000
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

Upon landing gear retraction after takeoff nose gear unsafe light remained illuminated. IFR flight plan was canceled and a flyby of the tower found both nose gear doors had remained open. The landing gear was selected to the down position and another flyby of the tower was conducted. The tower reported the landing gear appeared down however nose gear wheel and tire assembly was not in centered position (not parallel to centerline of aircraft) airborne communication with maintenance and lear jet technical support requested two more landing gear cycles with subsequent tower flybys; landing gear status remained unchanged from initial tower report. An emergency was declared; when legal landing weight was achieved; aircraft was landed. Landing was uneventful other than a minor vibration under 60 KIAS. Aircraft was shutdown on runway about one foot south of centerline. The nose wheel tire was found to be approximately 80 degrees to aircraft centerline. Aircraft was towed to hangar where post flight inspection found no visible damage (other that flat spot on tire). There were no injuries in this event.

Original NASA ASRS Text

Title: A LJ36 flight crew failed to receive positive gear retracted indications after takeoff. After multiple recycling and Tower flybys they elected to remain in the area to burn fuel to max landing weight and land. The landing was completed but the nose gear was cocked some 80 degrees from straight ahead. The aircraft was towed to the ramp.

Narrative: Upon landing gear retraction after takeoff nose gear unsafe light remained illuminated. IFR flight plan was canceled and a flyby of the Tower found both nose gear doors had remained open. The landing gear was selected to the down position and another flyby of the Tower was conducted. The Tower reported the landing gear appeared down however nose gear wheel and tire assembly was not in centered position (not parallel to centerline of aircraft) airborne communication with Maintenance and Lear Jet technical support requested two more landing gear cycles with subsequent Tower flybys; landing gear status remained unchanged from initial Tower report. An emergency was declared; when legal landing weight was achieved; aircraft was landed. Landing was uneventful other than a minor vibration under 60 KIAS. Aircraft was shutdown on runway about one foot south of centerline. The nose wheel tire was found to be approximately 80 degrees to aircraft centerline. Aircraft was towed to hangar where post flight inspection found no visible damage (other that flat spot on tire). There were no injuries in this event.

Data retrieved from NASA's ASRS site as of July 2013 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.