Altitude deviation altitude overshot in descent procedure.

Attributes
ACN	297470
Time
Date	199502
Day	Thu
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : bkl
State Reference	OH
Altitude	msl bound lower : 5200 msl bound upper : 6000
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Controlling Facilities	tracon : cle
Operator	common carrier : air taxi
Make Model Name	Gates Learjet Corp Undifferentiated or Other Model
Operating Under FAR Part	Part 135
Flight Phase	descent other
Route In Use	enroute : direct
Flight Plan	IFR
Person 1
Affiliation	company : air taxi
Function	flight crew : captain oversight : pic
Qualification	pilot : cfi pilot : atp
Experience	flight time last 90 days : 210 flight time total : 4200 flight time type : 3500
ASRS Report	297470
Person 2
Affiliation	company : air taxi
Function	flight crew : first officer
Qualification	pilot : instrument pilot : commercial
Experience	flight time type : 250
Events
Anomaly	altitude deviation : overshoot non adherence : clearance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course flight crew : became reoriented none taken : detected after the fact
Consequence	Other Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

On our descent into the cleveland area from FL240 to 6000 ft we were high, and the copilot deployed the spoilers to increase rate of descent to 5000-6000 FPM. During the descent we were given a vector heading northeast, and were questioned if we had the field in sight. I replied that we did, then started to set up coplts' side for backup localizer frequency and LOM frequency, and I reviewed approach checklist to make sure everything had been completed. I did not hear the 1000 ft to go chime, and with the spoilers deployed by the time the 300 ft past altitude chime sounded we passed 6000 ft, down to 5200 ft. At the sound of the 300 ft past chime we recovered to altitude as soon as we could. Approach did not ask us about our altitude. When I asked the copilot about the altitude excursion he replied that he had thought we were cleared for the visual when approach asked us if we had the field in sight. The copilot has 200-300 hours in the lear. I should have been much more observant during a critical phase of flight than I was, even though we were in VMC.

Original NASA ASRS Text

Title: ALTDEV ALT OVERSHOT IN DSCNT PROC.

Narrative: ON OUR DSCNT INTO THE CLEVELAND AREA FROM FL240 TO 6000 FT WE WERE HIGH, AND THE COPLT DEPLOYED THE SPOILERS TO INCREASE RATE OF DSCNT TO 5000-6000 FPM. DURING THE DSCNT WE WERE GIVEN A VECTOR HDG NE, AND WERE QUESTIONED IF WE HAD THE FIELD IN SIGHT. I REPLIED THAT WE DID, THEN STARTED TO SET UP COPLTS' SIDE FOR BACKUP LOC FREQ AND LOM FREQ, AND I REVIEWED APCH CHKLIST TO MAKE SURE EVERYTHING HAD BEEN COMPLETED. I DID NOT HEAR THE 1000 FT TO GO CHIME, AND WITH THE SPOILERS DEPLOYED BY THE TIME THE 300 FT PAST ALT CHIME SOUNDED WE PASSED 6000 FT, DOWN TO 5200 FT. AT THE SOUND OF THE 300 FT PAST CHIME WE RECOVERED TO ALT AS SOON AS WE COULD. APCH DID NOT ASK US ABOUT OUR ALT. WHEN I ASKED THE COPLT ABOUT THE ALT EXCURSION HE REPLIED THAT HE HAD THOUGHT WE WERE CLRED FOR THE VISUAL WHEN APCH ASKED US IF WE HAD THE FIELD IN SIGHT. THE COPLT HAS 200-300 HRS IN THE LEAR. I SHOULD HAVE BEEN MUCH MORE OBSERVANT DURING A CRITICAL PHASE OF FLT THAN I WAS, EVEN THOUGH WE WERE IN VMC.

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.