<< >> NASA ASRS Report 228364, December 1992

A cpr small transport deviated from its assigned altitude while in the process of solving a critical mechanical problem.

Attributes
ACN	228364
Time
Date	199212
Day	Mon
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : dca
State Reference	DC
Altitude	msl bound lower : 4800 msl bound upper : 5000
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : dca
Operator	general aviation : corporate
Make Model Name	Small Transport, Low Wing, 2 Turboprop Eng
Flight Phase	cruise other
Route In Use	arrival other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : atp
Experience	flight time last 90 days : 75 flight time total : 12000 flight time type : 1000
ASRS Report	228364
Events
Anomaly	aircraft equipment problem : critical altitude deviation : excursion from assigned altitude
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : overcame equipment problem flight crew : declared emergency
Consequence	Other
Supplementary
Primary Problem	Aircraft
Air Traffic Incident	Pilot Deviation

Narrative:

Upon descent into dca, right throttle was determined to be inoperative. While troubleshooting problem, plane was allowed to descend to 4800 ft from an assigned altitude of 5000 ft. Engine was shut down and diversion to iad accomplished for landing.

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Original NASA ASRS Text

Title: A CPR SMT DEVIATED FROM ITS ASSIGNED ALT WHILE IN THE PROCESS OF SOLVING A CRITICAL MECHANICAL PROB.

Narrative: UPON DSCNT INTO DCA, R THROTTLE WAS DETERMINED TO BE INOP. WHILE TROUBLESHOOTING PROB, PLANE WAS ALLOWED TO DSND TO 4800 FT FROM AN ASSIGNED ALT OF 5000 FT. ENG WAS SHUT DOWN AND DIVERSION TO IAD ACCOMPLISHED FOR LNDG.

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.