BE400A crew had both engines shut down on landing, after the start levers got into the shutdown mode...

Attributes
ACN	639560
Time
Date	200412
Day	Thu
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Flight Conditions	VMC
Light	Night
Aircraft 1
Operator	general aviation : personal
Make Model Name	Beechjet 400
Operating Under FAR Part	Part 91
Flight Phase	landing : roll
Flight Plan	IFR
Person 1
Affiliation	other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 170 flight time total : 11000 flight time type : 650
ASRS Report	639560
Person 2
Affiliation	other
Function	flight crew : first officer
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper documentation maintenance problem : improper maintenance other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : detected after the fact other
Consequence	faa : investigated faa : reviewed incident with flight crew other other
Factors
Maintenance	contributing factor : manuals performance deficiency : inspection performance deficiency : repair performance deficiency : testing performance deficiency : fault isolation
Supplementary
Problem Areas	Flight Crew Human Performance Company Aircraft Maintenance Human Performance
Primary Problem	Aircraft

Narrative:

Upon landing ZZZ while trying to deploy thrust reversers both thrust levers went into idle cutoff shutting down both engines. At first I thought this might be due to mechanical malfunction as this is abnormal, not supposed to be able to happen, and the throttle quadrant had been worked on multiple times lately by maintenance. After investigation by NTSB and company mechanics, no mechanical irregularities were noted. However I understand an official of maintenance for raytheon aircraft services sat in the plane, went to extend reversers, and both thrust levers went into cutoff. After further examination, it was noted that the design of the thrust levers puts part of the lockout mechanism to prevent going into cutoff, within easy reach where they can be easily bumped while trying to raise the thrust reversal paddles, and making it possible to accidentally shut off the engines, especially in a case where the thrust reversers are not deploying correctly and a pilot may try repeatedly to extend them. I never knew this was possible before this incident, but it is, and has happened before. In my case we used normal braking to decelerate and exited the runway, and restarted an engine. It could under some circumstances be much worse. Perhaps a guard could be fashioned under the reversal paddles or a redesign of the levers? Callback conversation with reporter revealed the following information: the captain notes there was a chronic problem with the throttle quadrant. The start levers are electrical and are tied into the thrust levers. There is a release into the reversers, the crew can bump them when trying to get into reverse.

Original NASA ASRS Text

Title: BE400A CREW HAD BOTH ENGS SHUT DOWN ON LNDG, AFTER THE START LEVERS GOT INTO THE SHUTDOWN MODE.

Narrative: UPON LNDG ZZZ WHILE TRYING TO DEPLOY THRUST REVERSERS BOTH THRUST LEVERS WENT INTO IDLE CUTOFF SHUTTING DOWN BOTH ENGS. AT FIRST I THOUGHT THIS MIGHT BE DUE TO MECHANICAL MALFUNCTION AS THIS IS ABNORMAL, NOT SUPPOSED TO BE ABLE TO HAPPEN, AND THE THROTTLE QUADRANT HAD BEEN WORKED ON MULTIPLE TIMES LATELY BY MAINT. AFTER INVESTIGATION BY NTSB AND COMPANY MECHS, NO MECHANICAL IRREGULARITIES WERE NOTED. HOWEVER I UNDERSTAND AN OFFICIAL OF MAINT FOR RAYTHEON ACFT SVCS SAT IN THE PLANE, WENT TO EXTEND REVERSERS, AND BOTH THRUST LEVERS WENT INTO CUTOFF. AFTER FURTHER EXAMINATION, IT WAS NOTED THAT THE DESIGN OF THE THRUST LEVERS PUTS PART OF THE LOCKOUT MECHANISM TO PREVENT GOING INTO CUTOFF, WITHIN EASY REACH WHERE THEY CAN BE EASILY BUMPED WHILE TRYING TO RAISE THE THRUST REVERSAL PADDLES, AND MAKING IT POSSIBLE TO ACCIDENTALLY SHUT OFF THE ENGS, ESPECIALLY IN A CASE WHERE THE THRUST REVERSERS ARE NOT DEPLOYING CORRECTLY AND A PLT MAY TRY REPEATEDLY TO EXTEND THEM. I NEVER KNEW THIS WAS POSSIBLE BEFORE THIS INCIDENT, BUT IT IS, AND HAS HAPPENED BEFORE. IN MY CASE WE USED NORMAL BRAKING TO DECELERATE AND EXITED THE RWY, AND RESTARTED AN ENG. IT COULD UNDER SOME CIRCUMSTANCES BE MUCH WORSE. PERHAPS A GUARD COULD BE FASHIONED UNDER THE REVERSAL PADDLES OR A REDESIGN OF THE LEVERS? CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE CAPT NOTES THERE WAS A CHRONIC PROB WITH THE THROTTLE QUADRANT. THE START LEVERS ARE ELECTRICAL AND ARE TIED INTO THE THRUST LEVERS. THERE IS A RELEASE INTO THE REVERSERS, THE CREW CAN BUMP THEM WHEN TRYING TO GET INTO REVERSE.

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.