<< >> NASA ASRS Report 221378, September 1992

An large transport crew overshot its assigned altitude on climb out. TCASII gave a gentle reminder as there was traffic in the neighborhood.

Attributes
ACN	221378
Time
Date	199209
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : den
State Reference	CO
Altitude	msl bound lower : 12000 msl bound upper : 12400
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : den
Operator	common carrier : air carrier
Make Model Name	Large Transport, Low Wing, 3 Turbojet Eng
Flight Phase	climbout : intermediate altitude cruise other
Route In Use	departure other
Flight Plan	IFR
Aircraft 2
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Flight Phase	cruise other
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : instrument pilot : commercial pilot : atp
Experience	flight time total : 20000
ASRS Report	221378
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Events
Anomaly	altitude deviation : overshoot non adherence : clearance other anomaly other
Independent Detector	aircraft equipment other aircraft equipment : unspecified other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Miss Distance	vertical : 700
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were departing den-las copilot flying. We were cleared to 12000 ft. It was light turbulence with up and down drafts. Alert light went off and I checked altitude and we had slipped up to approximately, 12300-12400 ft. We descended to 12000 ft. In the meantime, RA told us to descend. There was, another plane on radar at 13000 ft. Less than 2 seconds we received clear of conflict. ATC did not say anything.

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Original NASA ASRS Text

Title: AN LGT CREW OVERSHOT ITS ASSIGNED ALT ON CLB OUT. TCASII GAVE A GENTLE REMINDER AS THERE WAS TFC IN THE NEIGHBORHOOD.

Narrative: WE WERE DEPARTING DEN-LAS COPLT FLYING. WE WERE CLRED TO 12000 FT. IT WAS LIGHT TURB WITH UP AND DOWN DRAFTS. ALERT LIGHT WENT OFF AND I CHKED ALT AND WE HAD SLIPPED UP TO APPROX, 12300-12400 FT. WE DSNDED TO 12000 FT. IN THE MEANTIME, RA TOLD US TO DSND. THERE WAS, ANOTHER PLANE ON RADAR AT 13000 FT. LESS THAN 2 SECONDS WE RECEIVED CLR OF CONFLICT. ATC DID NOT SAY ANYTHING.

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.