|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||airport : gal|
|Altitude||msl bound lower : 1200|
msl bound upper : 1200
|Controlling Facilities||tracon : gal|
tower : abq
|Make Model Name||Small Aircraft, High Wing, 1 Eng, Fixed Gear|
|Flight Phase||cruise other|
|Route In Use||enroute : direct|
|Function||flight crew : single pilot|
|Qualification||pilot : commercial|
|Experience||flight time last 90 days : 185|
flight time total : 6300
|Affiliation||government : faa|
|Function||controller : approach|
|Qualification||controller : radar|
|Anomaly||aircraft equipment problem : critical|
|Independent Detector||other flight crewa|
|Resolutory Action||flight crew : overcame equipment problem|
flight crew : declared emergency
|Primary Problem||Flight Crew Human Performance|
|Air Traffic Incident||Pilot Deviation|
I had a flight from golena, our maintenance base, to koyukuk, an airport with no facs, to deliver a repaired tire for another aircraft. I was outside in -35 degree F temperatures for 2 hours and was very cold. I ran my aircraft engine for 10 mins, 1 hour after landing to keep it warm. Cold temperatures tend to cause nose struts to go flat. Takeoff from koyukuk was normal but cruise flight was in a right wing low attitude because the nose strut was flat resulting in a failure of the nose steering to disconnect from the rudder. A loss of power occurred and lasted several seconds. On approach control frequency I said the word 'mayday' to get their attention, and advised them of a power loss. I have never used 'mayday' on the radio before, but I was very cold and the thought of a forced landing 10 mi from the airport was frightening. One revenue passenger was aboard this leg and the aircraft heater was hardly working at all. At the same time I switched from the right fuel tank which was 1/2 full to the left tank which was also 1/2 full and turned on the low boost pump. This restored power and approach and landing was normal. Approach control asked about my situation soon after I called. I replied that everything was ok now and that it was a precautionary call. I think this situation could have been prevented by: 1) having an inflated nose strut, 2) trying to fix the problem before calling mayday, 3) warmer temperatures, and 4) having the fuel selected to the higher tank even with sufficient fuel quantity in the other one.
Original NASA ASRS Text
Title: SMA HAS MOMENTARY ENGINE FAILURE AND DECLARES AN EMERGENCY.
Narrative: I HAD A FLT FROM GOLENA, OUR MAINT BASE, TO KOYUKUK, AN ARPT WITH NO FACS, TO DELIVER A REPAIRED TIRE FOR ANOTHER ACFT. I WAS OUTSIDE IN -35 DEG F TEMPS FOR 2 HRS AND WAS VERY COLD. I RAN MY ACFT ENG FOR 10 MINS, 1 HR AFTER LNDG TO KEEP IT WARM. COLD TEMPS TEND TO CAUSE NOSE STRUTS TO GO FLAT. TKOF FROM KOYUKUK WAS NORMAL BUT CRUISE FLT WAS IN A RIGHT WING LOW ATTITUDE BECAUSE THE NOSE STRUT WAS FLAT RESULTING IN A FAILURE OF THE NOSE STEERING TO DISCONNECT FROM THE RUDDER. A LOSS OF PWR OCCURRED AND LASTED SEVERAL SECS. ON APCH CTL FREQ I SAID THE WORD 'MAYDAY' TO GET THEIR ATTN, AND ADVISED THEM OF A PWR LOSS. I HAVE NEVER USED 'MAYDAY' ON THE RADIO BEFORE, BUT I WAS VERY COLD AND THE THOUGHT OF A FORCED LNDG 10 MI FROM THE ARPT WAS FRIGHTENING. ONE REVENUE PAX WAS ABOARD THIS LEG AND THE ACFT HEATER WAS HARDLY WORKING AT ALL. AT THE SAME TIME I SWITCHED FROM THE RIGHT FUEL TANK WHICH WAS 1/2 FULL TO THE LEFT TANK WHICH WAS ALSO 1/2 FULL AND TURNED ON THE LOW BOOST PUMP. THIS RESTORED PWR AND APCH AND LNDG WAS NORMAL. APCH CTL ASKED ABOUT MY SITUATION SOON AFTER I CALLED. I REPLIED THAT EVERYTHING WAS OK NOW AND THAT IT WAS A PRECAUTIONARY CALL. I THINK THIS SITUATION COULD HAVE BEEN PREVENTED BY: 1) HAVING AN INFLATED NOSE STRUT, 2) TRYING TO FIX THE PROB BEFORE CALLING MAYDAY, 3) WARMER TEMPS, AND 4) HAVING THE FUEL SELECTED TO THE HIGHER TANK EVEN WITH SUFFICIENT FUEL QUANTITY IN THE OTHER ONE.
Data retrieved from NASA's ASRS site as of August 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.