<< >> NASA ASRS Report 458460, December 1999

A cargo jet PIC overshoots his altitude in descent by 500 ft before the first officer caught the deviation over jpu, wv.

Attributes
ACN	458460
Time
Date	199912
Day	Wed
Local Time Of Day	0001 To 0600
Place
State Reference	WV
Altitude	msl bound lower : 12500 msl bound upper : 13000
Environment
Flight Conditions	IMC
Light	Night
Aircraft 1
Controlling Facilities	artcc : zdc.artcc
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Operating Under FAR Part	Part 121
Flight Phase	descent : vacating altitude
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp pilot : commercial
Experience	flight time last 90 days : 100 flight time total : 8000 flight time type : 150
ASRS Report	458460
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Events
Anomaly	altitude deviation : overshoot non adherence : company policies non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Captain was flying and missed his altitude by 500 ft. He was supposed to level at 13000 ft. When I looked up he was at 12500 ft. No conflict. Cause was probably due to lack of sleep. He said he couldn't sleep the night before.

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Original NASA ASRS Text

Title: A CARGO JET PIC OVERSHOOTS HIS ALT IN DSCNT BY 500 FT BEFORE THE FO CAUGHT THE DEV OVER JPU, WV.

Narrative: CAPT WAS FLYING AND MISSED HIS ALT BY 500 FT. HE WAS SUPPOSED TO LEVEL AT 13000 FT. WHEN I LOOKED UP HE WAS AT 12500 FT. NO CONFLICT. CAUSE WAS PROBABLY DUE TO LACK OF SLEEP. HE SAID HE COULDN'T SLEEP THE NIGHT BEFORE.

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.