B727 air carrier flight crew flying near ocs fails to level at assigned altitude.

Attributes
ACN	478301
Time
Date	200007
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	navaid : ocs.vortac
State Reference	CO
Altitude	msl bound lower : 33000 msl bound upper : 33500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	artcc : zdv.artcc
Operator	common carrier : air carrier
Make Model Name	B727 Undifferentiated or Other Model
Operating Under FAR Part	Part 121
Navigation In Use	other vortac
Flight Phase	cruise : enroute altitude change
Flight Plan	IFR
Person 1
Function	flight crew : second officer
Qualification	pilot : flight engineer pilot : atp
Experience	flight time last 90 days : 150 flight time total : 6500 flight time type : 1000
ASRS Report	478301
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : instrument pilot : atp pilot : commercial pilot : multi engine
Experience	flight time last 90 days : 250 flight time total : 5500 flight time type : 2000
ASRS Report	478300
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	other controllerb
Resolutory Action	flight crew : became reoriented flight crew : returned to assigned altitude 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:

Inadvertent climb to FL335 (FL330 assigned). Autoplt leveloff/altitude capture feature was armed, but did not engage. Autoplt was manually disengaged at FL333 and aircraft pitch decreased to effect a descent without causing discomfort to passenger. Captain's altimeter reached a maximum of FL335 with setting of 29.92. Aircraft leveled off at FL330.

Original NASA ASRS Text

Title: B727 ACR FLC FLYING NEAR OCS FAILS TO LEVEL AT ASSIGNED ALT.

Narrative: INADVERTENT CLB TO FL335 (FL330 ASSIGNED). AUTOPLT LEVELOFF/ALT CAPTURE FEATURE WAS ARMED, BUT DID NOT ENGAGE. AUTOPLT WAS MANUALLY DISENGAGED AT FL333 AND ACFT PITCH DECREASED TO EFFECT A DSCNT WITHOUT CAUSING DISCOMFORT TO PAX. CAPT'S ALTIMETER REACHED A MAX OF FL335 WITH SETTING OF 29.92. ACFT LEVELED OFF AT FL330.

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.