Aircraft equipment problem tests air carrier pilot's skill in a descent level off maneuver.

Attributes
ACN	148093
Time
Date	199006
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : mco
State Reference	FL
Altitude	msl bound lower : 2000 msl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : mco
Operator	common carrier : air carrier
Make Model Name	Light Transport, Low Wing, 2 Turboprop Eng
Navigation In Use	Other Other
Flight Phase	cruise other cruise other descent other
Route In Use	arrival other enroute : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 150 flight time total : 9000 flight time type : 125
ASRS Report	148093
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	aircraft equipment problem : critical altitude deviation : crossing restriction not met altitude deviation : overshoot non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	flight crew : became reoriented flight crew : returned to intended course or assigned course flight crew : overcame equipment problem
Consequence	Other
Supplementary
Primary Problem	Ambiguous
Air Traffic Incident	other

Narrative:

On initial approach into mco, electronic engine control found to be malfunctioning making engine management difficult but possible. This, in turn, required unusually high rate of descent approach the FAF. Autoplt failed to capture assigned altitude (2500'), possibly due to descent rate. Manual override and corrective action initiated approximately 2600'. Deviation of about 500' due to high descent rate with climb to assigned altitude as soon as possible resulted. Normal approach and landing made after correction.

Original NASA ASRS Text

Title: ACFT EQUIPMENT PROBLEM TESTS ACR PLT'S SKILL IN A DESCENT LEVEL OFF MANEUVER.

Narrative: ON INITIAL APCH INTO MCO, ELECTRONIC ENG CTL FOUND TO BE MALFUNCTIONING MAKING ENG MGMNT DIFFICULT BUT POSSIBLE. THIS, IN TURN, REQUIRED UNUSUALLY HIGH RATE OF DSNT APCH THE FAF. AUTOPLT FAILED TO CAPTURE ASSIGNED ALT (2500'), POSSIBLY DUE TO DSNT RATE. MANUAL OVERRIDE AND CORRECTIVE ACTION INITIATED APPROX 2600'. DEVIATION OF ABOUT 500' DUE TO HIGH DSNT RATE WITH CLB TO ASSIGNED ALT ASAP RESULTED. NORMAL APCH AND LNDG MADE AFTER CORRECTION.

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.