Altitude deviation altitude overshot by widebody transport in climb to towards occupied altitude.

Attributes
ACN	217338
Time
Date	199208
Day	Mon
Local Time Of Day	0601 To 1200
Place
Locale Reference	atc facility : pke
State Reference	CA
Altitude	msl bound lower : 25000 msl bound upper : 25400
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zla
Operator	common carrier : air carrier
Make Model Name	Widebody, Low Wing, 2 Turbojet Eng
Navigation In Use	Other Other
Flight Phase	climbout : intermediate altitude
Flight Plan	IFR
Aircraft 2
Operator	common carrier : air carrier
Make Model Name	Medium Large Transport, Low Wing, 2 Turbojet Eng
Flight Phase	cruise other
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 220 flight time total : 21000 flight time type : 5000
ASRS Report	217338
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 220 flight time total : 6500 flight time type : 1800
ASRS Report	217339
Events
Anomaly	altitude deviation : overshoot conflict : airborne less severe non adherence : clearance
Independent Detector	aircraft equipment other aircraft equipment : unspecified other controllera
Resolutory Action	controller : issued new clearance flight crew : returned to intended course or assigned course other
Consequence	Other
Miss Distance	horizontal : 42000 vertical : 600
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

We were cleared to climb to FL270. At FL254, ATC asked us if we were level FL250. With our negative response they directed immediate descent to FL250. We received a TCASII alert on opposing traffic at FL260.

Original NASA ASRS Text

Title: ALTDEV ALT OVERSHOT BY WDB IN CLB TO TOWARDS OCCUPIED ALT.

Narrative: WE WERE CLRED TO CLB TO FL270. AT FL254, ATC ASKED US IF WE WERE LEVEL FL250. WITH OUR NEGATIVE RESPONSE THEY DIRECTED IMMEDIATE DSCNT TO FL250. WE RECEIVED A TCASII ALERT ON OPPOSING TFC AT FL260.

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.