<< >> NASA ASRS Report 562731, October 2002

F100 crew had a malfunctioning autoplt that gave the aircraft a rapid roll rate. This caused the flight attendants to hit their head on the overhead bin.

Attributes
ACN	562731
Time
Date	200210
Day	Sat
Local Time Of Day	1801 To 2400
Place
Locale Reference	navaid : jvl.vortac
State Reference	IL
Altitude	msl single value : 23000
Aircraft 1
Controlling Facilities	artcc : zau.artcc
Operator	common carrier : air carrier
Make Model Name	Fokker 100
Operating Under FAR Part	Part 121
Flight Phase	cruise : level
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Qualification	pilot : multi engine pilot : instrument pilot : commercial
ASRS Report	562731
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Events
Anomaly	aircraft equipment problem : less severe other anomaly other anomaly other
Independent Detector	other other : 3
Resolutory Action	flight crew : regained aircraft control flight crew : overrode automation
Consequence	other other other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

Autoplt event with flight upset. We were in cruise. I was the PF. The autoplt was engaged and we performed our approach briefing. I noticed the airplane in a left 20 degree bank while the flight director was commanding a 20 degree right bank. The autoplt was still engaged. I reached up to the controls. As I put my hands on the controls, the aircraft rolled to the right to the commanded bank attitude and the autoplt remained engaged. The roll rate was swift but not overly violent. As we were determining what might be the problem, the #2 flight attendant called the captain. I was not aware of the whole conversation, but the captain said the flight attendants hit their heads on the overhead bins while in the aisle. Aircraft was flown to ord with no further incident. We hand flew the airplane below 5000 ft just to make sure it didn't happen again.

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Original NASA ASRS Text

Title: F100 CREW HAD A MALFUNCTIONING AUTOPLT THAT GAVE THE ACFT A RAPID ROLL RATE. THIS CAUSED THE FLT ATTENDANTS TO HIT THEIR HEAD ON THE OVERHEAD BIN.

Narrative: AUTOPLT EVENT WITH FLT UPSET. WE WERE IN CRUISE. I WAS THE PF. THE AUTOPLT WAS ENGAGED AND WE PERFORMED OUR APCH BRIEFING. I NOTICED THE AIRPLANE IN A L 20 DEG BANK WHILE THE FLT DIRECTOR WAS COMMANDING A 20 DEG R BANK. THE AUTOPLT WAS STILL ENGAGED. I REACHED UP TO THE CTLS. AS I PUT MY HANDS ON THE CTLS, THE ACFT ROLLED TO THE R TO THE COMMANDED BANK ATTITUDE AND THE AUTOPLT REMAINED ENGAGED. THE ROLL RATE WAS SWIFT BUT NOT OVERLY VIOLENT. AS WE WERE DETERMINING WHAT MIGHT BE THE PROB, THE #2 FLT ATTENDANT CALLED THE CAPT. I WAS NOT AWARE OF THE WHOLE CONVERSATION, BUT THE CAPT SAID THE FLT ATTENDANTS HIT THEIR HEADS ON THE OVERHEAD BINS WHILE IN THE AISLE. ACFT WAS FLOWN TO ORD WITH NO FURTHER INCIDENT. WE HAND FLEW THE AIRPLANE BELOW 5000 FT JUST TO MAKE SURE IT DIDN'T HAPPEN AGAIN.

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.