A BAC146 flight returns to dtw after it runs into severe turbulence on its climb out from dtw, mi.

Attributes
ACN	450860
Time
Date	199909
Day	Wed
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : dxo.vor
State Reference	MI
Altitude	msl bound lower : 16000 msl bound upper : 16500
Environment
Flight Conditions	IMC
Weather Elements	Turbulence
Light	Night
Aircraft 1
Controlling Facilities	artcc : zob.artcc tower : lax.tower
Operator	common carrier : air carrier
Operating Under FAR Part	Part 121
Navigation In Use	other
Flight Phase	climbout : intermediate altitude
Route In Use	departure sid : st clair two
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 210 flight time total : 6800 flight time type : 370
ASRS Report	450860
Person 2
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : commercial pilot : instrument pilot : multi engine
Events
Anomaly	aircraft equipment problem : critical inflight encounter : turbulence inflight encounter : weather other anomaly
Independent Detector	other flight crewa
Resolutory Action	flight crew : landed as precaution flight crew : regained aircraft control flight crew : diverted to another airport flight crew : exited adverse environment
Consequence	other other other
Supplementary
Problem Areas	Environmental Factor Flight Crew Human Performance Weather Aircraft
Primary Problem	Weather

Narrative:

While flying the st clair 2 departure from dtw to pwm, encountered severe turbulence during climb out over pista intersection. Lost flight director, autoplt, thrust rating panel and autothrottles. Got clearance to 12000 ft and a turn to the west. Flew raw data to 12000 ft attempting numerous times to reacquire flight director. Once in smooth air, was able to get system components back. I did not declare an emergency nor did I suspect any structural damage to aircraft. Galley/cabin reported no injuries. I returned to dtw after informing ATC of PIREP and dispatch. Landed at dtw uneventfully. The turbulence encountered was not forecast nor was it associated with any convective activity in the area.

Original NASA ASRS Text

Title: A BAC146 FLT RETURNS TO DTW AFTER IT RUNS INTO SEVERE TURB ON ITS CLBOUT FROM DTW, MI.

Narrative: WHILE FLYING THE ST CLAIR 2 DEP FROM DTW TO PWM, ENCOUNTERED SEVERE TURB DURING CLBOUT OVER PISTA INTXN. LOST FLT DIRECTOR, AUTOPLT, THRUST RATING PANEL AND AUTOTHROTTLES. GOT CLRNC TO 12000 FT AND A TURN TO THE W. FLEW RAW DATA TO 12000 FT ATTEMPTING NUMEROUS TIMES TO REACQUIRE FLT DIRECTOR. ONCE IN SMOOTH AIR, WAS ABLE TO GET SYS COMPONENTS BACK. I DID NOT DECLARE AN EMER NOR DID I SUSPECT ANY STRUCTURAL DAMAGE TO ACFT. GALLEY/CABIN RPTED NO INJURIES. I RETURNED TO DTW AFTER INFORMING ATC OF PIREP AND DISPATCH. LANDED AT DTW UNEVENTFULLY. THE TURB ENCOUNTERED WAS NOT FORECAST NOR WAS IT ASSOCIATED WITH ANY CONVECTIVE ACTIVITY IN THE AREA.

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.