Altitude overshoot in descent.

Attributes
ACN	294980
Time
Date	199501
Day	Wed
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : mob
State Reference	AL
Altitude	msl bound lower : 10700 msl bound upper : 11000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Controlling Facilities	tracon : mob
Operator	general aviation : corporate
Make Model Name	Any Unknown or Unlisted Aircraft Manufacturer
Operating Under FAR Part	Part 91
Flight Phase	descent other
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain instruction : instructor oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 40 flight time total : 10000 flight time type : 260
ASRS Report	294980
Person 2
Affiliation	Other
Function	flight crew : first officer instruction : trainee
Qualification	pilot : commercial pilot : instrument
Events
Anomaly	altitude deviation : overshoot non adherence : clearance
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

While giving a new copilot initial training it was necessary to file IFR for the high altitude work during descent phase prior to takeoff and landing practice we were cleared from 16000-11000 ft by center and turned over to mons approach control. The speed brake demonstration created a descent rate he was not used to and we inadvertently descended through our assigned altitude -- no comment was made by approach control -- we climbed back to our assigned altitude immediately then canceled IFR and proceeded with approach and landing training. As an instructor pilot I should be more cognizant of altitude control especially when the trainee is not familiar with speed brakes and high rates of descent.

Original NASA ASRS Text

Title: ALT OVERSHOOT IN DSCNT.

Narrative: WHILE GIVING A NEW COPLT INITIAL TRAINING IT WAS NECESSARY TO FILE IFR FOR THE HIGH ALT WORK DURING DSCNT PHASE PRIOR TO TKOF AND LNDG PRACTICE WE WERE CLRED FROM 16000-11000 FT BY CTR AND TURNED OVER TO MONS APCH CTL. THE SPD BRAKE DEMONSTRATION CREATED A DSCNT RATE HE WAS NOT USED TO AND WE INADVERTENTLY DSNDED THROUGH OUR ASSIGNED ALT -- NO COMMENT WAS MADE BY APCH CTL -- WE CLBED BACK TO OUR ASSIGNED ALT IMMEDIATELY THEN CANCELED IFR AND PROCEEDED WITH APCH AND LNDG TRAINING. AS AN INSTRUCTOR PLT I SHOULD BE MORE COGNIZANT OF ALT CTL ESPECIALLY WHEN THE TRAINEE IS NOT FAMILIAR WITH SPD BRAKES AND HIGH RATES OF DSCNT.

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.