<< >> NASA ASRS Report 508620, April 2001

Heavy jet PIC overshoots his assigned altitude during descent to 2900 ft while hand flying his aircraft in foreign airspace.

Attributes
ACN	508620
Time
Date	200104
Day	Sat
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : rksi.airport
State Reference	FO
Altitude	msl bound lower : 2600 msl bound upper : 2900
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mry.tracon
Operator	common carrier : air carrier
Make Model Name	B747 Undifferentiated or Other Model
Flight Phase	descent : approach
Route In Use	arrival : on vectors
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : military pilot : atp
Experience	flight time last 90 days : 200 flight time total : 15000 flight time type : 120
ASRS Report	508620
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Resolutory Action	flight crew : became reoriented flight crew : returned to assigned altitude
Supplementary
Problem Areas	Environmental Factor Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While on an approach vector to descend and maintain 2900 ft, I was hand flying the approach and went through 2900 ft altitude to 2640 ft. This was 260 ft below the assigned 2900 ft ATC instruction. However, the 300 ft altitude warning on our aircraft did come on. I immediately climbed 260 ft to maintain 2900 ft until ATC gave a lower altitude assignment. ATC never mentioned deviation and no aircraft conflict existed. Causal factor: I was trying to instruct FMC procedures while hand flying in a very busy environment.

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Original NASA ASRS Text

Title: HVY JET PIC OVERSHOOTS HIS ASSIGNED ALT DURING DSCNT TO 2900 FT WHILE HAND FLYING HIS ACFT IN FOREIGN AIRSPACE.

Narrative: WHILE ON AN APCH VECTOR TO DSND AND MAINTAIN 2900 FT, I WAS HAND FLYING THE APCH AND WENT THROUGH 2900 FT ALT TO 2640 FT. THIS WAS 260 FT BELOW THE ASSIGNED 2900 FT ATC INSTRUCTION. HOWEVER, THE 300 FT ALT WARNING ON OUR ACFT DID COME ON. I IMMEDIATELY CLBED 260 FT TO MAINTAIN 2900 FT UNTIL ATC GAVE A LOWER ALT ASSIGNMENT. ATC NEVER MENTIONED DEV AND NO ACFT CONFLICT EXISTED. CAUSAL FACTOR: I WAS TRYING TO INSTRUCT FMC PROCS WHILE HAND FLYING IN A VERY BUSY ENVIRONMENT.

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.