|37000 Feet||Browse and search NASA's
Aviation Safety Reporting System
|Local Time Of Day||1201 To 1800|
|Locale Reference||atc facility : vuz|
|Altitude||msl bound lower : 24800|
msl bound upper : 25000
|Controlling Facilities||artcc : zme|
|Operator||general aviation : corporate|
|Make Model Name||Light Transport, Low Wing, 2 Turbojet Eng|
|Flight Phase||cruise other|
|Route In Use||enroute airway : j14|
|Function||flight crew : captain|
oversight : pic
|Qualification||pilot : atp|
|Experience||flight time last 90 days : 100|
flight time total : 8900
flight time type : 500
|Function||flight crew : first officer|
|Qualification||pilot : commercial|
pilot : instrument
|Anomaly||aircraft equipment problem : critical|
altitude deviation : excursion from assigned altitude
non adherence : clearance
|Independent Detector||other flight crewa|
|Resolutory Action||controller : issued new clearance|
|Air Traffic Incident||Pilot Deviation|
We were doing an engine data flight on an IFR flight plan. During an idle determination test we slowed from 250 KTS to 1.2 vs at FL250. Upon reaching 1.2 vs the #1 engine failed to respond to power lever inputs. Being on the back side of the power curve we were unable to maintain FL250. ZME was slow in grasping our situation and in getting us a lower altitude. We had descended to FL248 or so by the time we received a descent clearance.
Original NASA ASRS Text
Title: ACFT LOST 200 FT DURING A TEST FLT.
Narrative: WE WERE DOING AN ENG DATA FLT ON AN IFR FLT PLAN. DURING AN IDLE DETERMINATION TEST WE SLOWED FROM 250 KTS TO 1.2 VS AT FL250. UPON REACHING 1.2 VS THE #1 ENG FAILED TO RESPOND TO PWR LEVER INPUTS. BEING ON THE BACK SIDE OF THE PWR CURVE WE WERE UNABLE TO MAINTAIN FL250. ZME WAS SLOW IN GRASPING OUR SIT AND IN GETTING US A LOWER ALT. WE HAD DSNDED TO FL248 OR SO BY THE TIME WE RECEIVED A DSCNT CLRNC.
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.