A be-400 master caution light illuminated along with the right thrust reverser arm and unlock lights...

Attributes
ACN	1045544
Time
Date	201210
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.TRACON
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Beechjet 400
Operating Under FAR Part	Part 91
Flight Phase	Descent
Route In Use	Visual Approach
Flight Plan	IFR
Component
Aircraft Component	Turbine Engine Thrust Reverser
Person 1
Function	First Officer Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	Aircraft Equipment Problem Critical

Narrative:

During a repositioning flight in the descent phase; about 20 nautical miles from our destination; and passing through 10;000 feet; both the pilot flying and I noticed the master warning light flashing without any associated annunciator light illuminated. A few minutes later; we noticed both right thrust reverser arm and unlock lights gradually illuminate. The pilot flying ran the memory items and called for the related checklists; which were completed while approaching the airport terminal airspace. The decision was made to shutdown the right engine as a preventive measure in case the right thrust reverser did fully deploy. The single engine visual approach and landing was successful and uneventful. Due to the mechanical nature of the problem; I don't have any recommendations.

Original NASA ASRS Text

Title: A BE-400 Master Caution light illuminated along with the Right Thrust Reverser Arm and Unlock lights so the checklist was completed and the engine was shutdown during descent to preclude full deployment.

Narrative: During a repositioning flight in the descent phase; about 20 nautical miles from our destination; and passing through 10;000 feet; both the pilot flying and I noticed the Master Warning Light flashing without any associated annunciator light illuminated. A few minutes later; we noticed both Right Thrust Reverser Arm and Unlock lights gradually illuminate. The pilot flying ran the memory items and called for the related checklists; which were completed while approaching the airport terminal airspace. The decision was made to shutdown the right engine as a preventive measure in case the right thrust reverser did fully deploy. The single engine visual approach and landing was successful and uneventful. Due to the mechanical nature of the problem; I don't have any recommendations.

Data retrieved from NASA's ASRS site as of July 2013 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.

A be-400 master caution light illuminated along with the right thrust reverser arm and unlock lights so the checklist was completed and the engine was shutdown during descent to preclude full deployment.