WW24 crew had an aircraft trim problem which caused altitude and speed deviations.

Attributes
ACN	426460
Time
Date	199901
Day	Tue
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : bfi
State Reference	WA
Altitude	msl bound lower : 2000 msl bound upper : 2300
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	IAI1124/1124A/Westwind
Route In Use	departure other departure sid : sid
Flight Plan	IFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : commercial
Experience	flight time last 90 days : 160 flight time total : 4900 flight time type : 75
ASRS Report	426460
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : commercial
Events
Anomaly	aircraft equipment problem : less severe altitude deviation : overshoot other anomaly other
Independent Detector	other flight crewa
Resolutory Action	flight crew : returned to intended course or assigned course
Consequence	Other
Supplementary
Air Traffic Incident	Pilot Deviation

Narrative:

On the above date, the aircraft was on the kent departure off bfi, when it experienced a primary trim failure. As the kent departure calls for a 2000 ft MSL leveloff, the PF (which on this leg was the first officer) started to level the aircraft when he noticed the trim failure. By the time the aircraft was leveled and the checklist items run, the aircraft had exceeded its 250 KT speed limit and was indicating 275 KTS. This was noted immediately and corrected for. No announcement was made by ATC. In the meanwhile, the aircraft had deviated altitude from the published 2000 ft MSL to 2300 ft MSL.

Original NASA ASRS Text

Title: WW24 CREW HAD AN ACFT TRIM PROB WHICH CAUSED ALT AND SPD DEVS.

Narrative: ON THE ABOVE DATE, THE ACFT WAS ON THE KENT DEP OFF BFI, WHEN IT EXPERIENCED A PRIMARY TRIM FAILURE. AS THE KENT DEP CALLS FOR A 2000 FT MSL LEVELOFF, THE PF (WHICH ON THIS LEG WAS THE FO) STARTED TO LEVEL THE ACFT WHEN HE NOTICED THE TRIM FAILURE. BY THE TIME THE ACFT WAS LEVELED AND THE CHKLIST ITEMS RUN, THE ACFT HAD EXCEEDED ITS 250 KT SPD LIMIT AND WAS INDICATING 275 KTS. THIS WAS NOTED IMMEDIATELY AND CORRECTED FOR. NO ANNOUNCEMENT WAS MADE BY ATC. IN THE MEANWHILE, THE ACFT HAD DEVIATED ALT FROM THE PUBLISHED 2000 FT MSL TO 2300 FT MSL.

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.