Flight crew of F27 has miscom with ground crew and as aircraft moves the propeller strikes a gpu.

Attributes
ACN	371139
Time
Date	199706
Day	Thu
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : sfb
State Reference	FL
Altitude	agl bound lower : 0 agl bound upper : 0
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : corporate
Make Model Name	Medium Transport, High Wing, 2 Turboprop Eng
Operating Under FAR Part	Part 91
Flight Phase	ground : preflight
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : captain oversight : pic
Qualification	pilot : atp
Experience	flight time last 90 days : 10 flight time total : 20000 flight time type : 4000
ASRS Report	371139
Person 2
Affiliation	Other
Function	flight crew : first officer
Qualification	pilot : atp
Experience	flight time last 90 days : 230 flight time total : 16000 flight time type : 5
ASRS Report	371047
Events
Anomaly	non adherence : far other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : unable
Consequence	other
Supplementary
Air Traffic Incident	other

Narrative:

After being cleared to taxi by the ground agent, the right propeller struck the gpu that had not been removed. Captain signaled to remove unit. When agent reappeared, the signal was given to pull chocks. When agent reappeared, he signaled clear to taxi. The aircraft moved approximately 4 ft when the propeller clipped the gpu, destroying the propeller. The agent was confused and pulled the chocks first. Supplemental information from acn 371047: apparently the ground crew had removed the chocks prior to moving the power cart. The captain, thinking all equipment was clear, released the brakes and the aircraft rolled forward a few ft with the right propeller hitting the power cart. Standard, concise hand signals and verbal instructions between the captain and ground crew would have prevented this.

Original NASA ASRS Text

Title: FLC OF F27 HAS MISCOM WITH GND CREW AND AS ACFT MOVES THE PROP STRIKES A GPU.

Narrative: AFTER BEING CLRED TO TAXI BY THE GND AGENT, THE R PROP STRUCK THE GPU THAT HAD NOT BEEN REMOVED. CAPT SIGNALED TO REMOVE UNIT. WHEN AGENT REAPPEARED, THE SIGNAL WAS GIVEN TO PULL CHOCKS. WHEN AGENT REAPPEARED, HE SIGNALED CLR TO TAXI. THE ACFT MOVED APPROX 4 FT WHEN THE PROP CLIPPED THE GPU, DESTROYING THE PROP. THE AGENT WAS CONFUSED AND PULLED THE CHOCKS FIRST. SUPPLEMENTAL INFO FROM ACN 371047: APPARENTLY THE GND CREW HAD REMOVED THE CHOCKS PRIOR TO MOVING THE PWR CART. THE CAPT, THINKING ALL EQUIP WAS CLR, RELEASED THE BRAKES AND THE ACFT ROLLED FORWARD A FEW FT WITH THE R PROP HITTING THE PWR CART. STANDARD, CONCISE HAND SIGNALS AND VERBAL INSTRUCTIONS BTWN THE CAPT AND GND CREW WOULD HAVE PREVENTED THIS.

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.