19980501014959A

Accident · Substantial damage

FAA accident report · Blanca 17-30A · Brewton, AL · May 1, 1998

Date
May 1, 1998 · 12:30 local
Place
Brewton, AL
Phase of flight
Fcd/Prec Ldg From Cruise
Operating rules
General operating rules (Part 91)
Damage
Substantial damage
Aircraft
N6645V
NTSB investigation
NTSBATL98LA070
Reported as
Blanca 1730A
Reported engine
Continental IO520*
People aboard
2
Fatal injuries
0
Pilot’s flight hours
402 total95 in this make and model

From the FAA’s Accident/Incident Data System (AIDS), through its Aviation Safety Information Portal, as reported. The NTSB investigates accidents separately, and its record of an accident is the fuller one. The aircraft is matched to the registry by N-number and event date, checked against the reported make and model; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.

What happened

The FAA’s narrative, in sentence case. The FAA writes it in capitals and removes private details.

Lost power unable prop speed control. Hit fence landing. Left wing sheared. Crankshaft broke. Improper toh torque. (.4) on may 1, 1998, at 1230 CST a Bellanca BL-17-30A, N6645V, lost engine power and was forced to make an emergency landing in a field near Brewton, Alabama. There were no injuries to the pilot, and the aircraft was substantially damaged after colliding with a fence during the landing roll. Teardown of the engine revealed that the number 3 main bearing had spun, the crankshaft was broken at the number 3 cheek, and the crankcase exhibited fretting at the case mating surfaces, consistent with improper throughbolt torque. The engine had undergone a top overhaul 197.4 hours prior to the failure of the crankshaft. (-23) pilot experienced loss of engine power. Engine responded to power input but propeller was unresponsive to propeller control aircraft could not maintain flight and pilot initiated emergency landing in open field. Aircraft struck surrounding fence and fence post causing substantial damage to left and right wings. The left wing sheared approximately half the distance from fuselage to wingtip, right wing sustained damage to lower surface area

As the FAA filed it

LOST POWER UNABLE PROP SPEED CONTROL. HIT FENCE LANDING. LEFT WING SHEARED. CRANKSHAFT BROKE. IMPROPER TOH TORQUE. (.4) ON MAY 1, 1998, AT 1230 CST A BELLANCA BL-17-30A, N6645V, LOST ENGINE POWER AND WAS FORCED TO MAKE AN EMERGENCY LANDING IN A FIELD NEAR BREWTON, ALABAMA. THERE WERE NO INJURIES TO THE PILOT, AND THE AIRCRAFT WAS SUBSTANTIALLY DAMAGED AFTER COLLIDING WITH A FENCE DURING THE LANDING ROLL. TEARDOWN OF THE ENGINE REVEALED THAT THE NUMBER 3 MAIN BEARING HAD SPUN, THE CRANKSHAFT WAS BROKEN AT THE NUMBER 3 CHEEK, AND THE CRANKCASE EXHIBITED FRETTING AT THE CASE MATING SURFACES, CONSISTENT WITH IMPROPER THROUGHBOLT TORQUE. THE ENGINE HAD UNDERGONE A TOP OVERHAUL 197.4 HOURS PRIOR TO THE FAILURE OF THE CRANKSHAFT. (-23) PILOT EXPERIENCED LOSS OF ENGINE POWER. ENGINE RESPONDED TO POWER INPUT BUT PROPELLER WAS UNRESPONSIVE TO PROPELLER CONTROL AIRCRAFT COULD NOT MAINTAIN FLIGHT AND PILOT INITIATED EMERGENCY LANDING IN OPEN FIELD. AIRCRAFT STRUCK SURROUNDING FENCE AND FENCE POST CAUSING SUBSTANTIAL DAMAGE TO LEFT AND RIGHT WINGS. THE LEFT WING SHEARED APPROXIMATELY HALF THE DISTANCE FROM FUSELAGE TO WINGTIP, RIGHT WING SUSTAINED DAMAGE TO LOWER SURFACE AREA

NTSB investigation

The NTSB’s investigation of this event, with its probable cause and findings. Matched to this report by N-number and date.

Other reports on N6645V · 1

Matched to the same aircraft by N-number and date.