19870908050469A

Accident · Substantial damage

FAA accident report · Bell 47G-4A · Minot, ND · September 8, 1987

Date: September 8, 1987 · 15:30 local
Place: Minot, ND
Phase of flight: Low Level Operations
Operating rules: Agricultural (Part 137)
Operator: WFBG
Damage: Substantial damage
Aircraft: N2238W
NTSB investigation: NTSBDEN87DTG02
Reported as: Bell 47G4A
Reported engine: Lycoming VO540B1B3
People aboard: 1
Fatal injuries: 0
Pilot’s flight hours: 16,488 total1,850 in this make and model265 in the last 90 days

N2238WRegistration cancelled Aug 30, 2012 · Bell 47G-4AS/N 7704 · Built 1970 Airframe modelBell 47G-4A Engine modelLycoming VO-540 seriesReciprocating

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.

The helicopter lost rotor speed after encountering its own wake during spraying. Valve failure prevented load dump.

As the FAA filed it

THE HELICOPTER LOST ROTOR SPEED AFTER ENCOUNTERING ITS OWN WAKE DURING SPRAYING. VALVE FAILURE PREVENTED LOAD DUMP.

NTSB investigation

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

NTSB DEN87DTG02Accident · No injuriesFinal reportMinot, NDThe plt rprtd that when he took off fm a nrby nurse truck, the wind was fm the NE at 5 to 7 mph. He made an observation pass across the area to be treated, then bgn a dscndg rgt turn to make a swath run in the opposite drctn. He stated he was unaware of a…Sep 8, 1987 · Substantial damage

Other reports on N2238W · 2

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

Accident 19900414009099ALow Level Operations · Bixby, OKLoud bang during a final spray run. Spray boom hit the wheat and helicopter crashed ejecting pilot. Cause unknown.Apr 14, 1990 · Destroyed Incident 19820514041879IPwr Off Run Land (Autorotation · North Brunswick, NJCylinder connecting rod bolt failed. Auto rotated into brush, damaging the tail rotor.May 14, 1982 · Minor damage