<< >> NASA ASRS Report 445990, August 1999

Flight crew of a beech 1900 overshot assigned altitude on descent due to a misunderstanding of the assigned altitude.

Attributes
ACN	445990
Time
Date	199908
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : day.airport
State Reference	OH
Altitude	msl bound lower : 8300 msl bound upper : 9000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : day.tracon
Operator	common carrier : air carrier
Make Model Name	Beech 1900
Operating Under FAR Part	Part 135
Flight Phase	descent : vacating altitude
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp pilot : instrument pilot : multi engine pilot : cfi
Experience	flight time last 90 days : 200 flight time total : 3300 flight time type : 1500
ASRS Report	445990
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial pilot : multi engine
Events
Anomaly	altitude deviation : overshoot non adherence : clearance other anomaly other
Independent Detector	other controllera
Resolutory Action	controller : issued alert flight crew : returned to assigned altitude
Consequence	Other
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

I had checked in with day approach. They told us to descend to 9000 ft and gave the current altimeter setting 29.83. I thought I heard 8000 ft, and read it back, and set 8000 ft in the altitude alerter. The first officer also agreed when I made the call. At about 8300 ft, the approach controller said 'I thought you read that back wrong, I need you at 9000 ft.' we climbed back to 9000 ft and no conflict occurred and nothing further was said. I either heard the controller wrong and may have switched one of the digits from the altimeter setting that was given at the same time.

Related reports:

• Flight crew of a DHC8 overshot assigned altitude on descent ...
• Flight crew of a cpr g-iv overshot intermediate descent alti...
• Flight crew of an large transport overshot descent altitude ...
• Flight crew of an FK100 overshot descent altitude during des...
• Flight crew overshot altitude on descent due to misunderstan...
• Flight crew of a B737 overshot descent altitude during appro...

	Enter your search terms Submit search form
	Web www.37000feet.com

Original NASA ASRS Text

Title: FLC OF A BEECH 1900 OVERSHOT ASSIGNED ALT ON DSCNT DUE TO A MISUNDERSTANDING OF THE ASSIGNED ALT.

Narrative: I HAD CHKED IN WITH DAY APCH. THEY TOLD US TO DSND TO 9000 FT AND GAVE THE CURRENT ALTIMETER SETTING 29.83. I THOUGHT I HEARD 8000 FT, AND READ IT BACK, AND SET 8000 FT IN THE ALT ALERTER. THE FO ALSO AGREED WHEN I MADE THE CALL. AT ABOUT 8300 FT, THE APCH CTLR SAID 'I THOUGHT YOU READ THAT BACK WRONG, I NEED YOU AT 9000 FT.' WE CLBED BACK TO 9000 FT AND NO CONFLICT OCCURRED AND NOTHING FURTHER WAS SAID. I EITHER HEARD THE CTLR WRONG AND MAY HAVE SWITCHED ONE OF THE DIGITS FROM THE ALTIMETER SETTING THAT WAS GIVEN AT THE SAME TIME.

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.