- Date
- July 21, 1977
- Place
- Byron Center, MI · BYRON CENTER, MI
- Injuries
- 1 serious
- Damage
- Substantial damage
- Phase of flight
- Takeoff
- Aircraft
- N64580Bell 47D
- Status
- Completed · report November 16, 1977
- Report
- Brief approved by the director
- FAA report
- 19770721019199A
- Case key
- 146359
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.
On this page
NTSB brief
NTSB’s brief of the accident, as it was printed: the coded facts, with the probable cause and factors.
---------------------------------------------------------------------------------------------------------------------------- FILE DATE LOCATION AIRCRAFT DATA INJURIES FLIGHT PILOT DATA F S M/N PURPOSE ---------------------------------------------------------------------------------------------------------------------------- 3-2238 77/7/21 BYRON CENTER,MI BELL 47D CR- 0 1 0 COMMERCIAL COMMERCIAL, FL.INSTR., TIME - 2030 N64580 PX- 0 0 0 ASSOC CROP CTL ACTIVITY AGE 39, 1800 TOTAL HOURS, DAMAGE-SUBSTANTIAL OT- 0 0 0 300 IN TYPE, NOT INSTRUMENT RATED. DEPARTURE POINT INTENDED DESTINATION BYRON CENTER,MI LOCAL TYPE OF ACCIDENT PHASE OF OPERATION COLLIDED WITH: BUILDING(S) TAKEOFF: VERTICAL PROBABLE CAUSE(S) PILOT IN COMMAND - FAILED TO MAINTAIN ADEQUATE ROTOR R.P.M. SPECIAL DATA TOTAL HOURS IN CROP CONTROL - 500 KIND OF OPERATION - FERTILIZING (LIQUID) KIND OF CROP - CORN TYPE OF CHEMICAL USED - DRY CHEMICAL-NONTOXIC PILOT' S SEAT BELT -FASTENED-PROPERLY GLOVES - NOT USED GOGGLES - NOT USED CRASH HELMET - AVAILABLE-NOT USED COCKPIT CRASHPAD - INSTALLED CRASH BAR - INSTALLED TANK/HOPPER-LOCATION - SIDES TERRAIN-TYPE -LEVEL,FLAT ELEVATION-AREA BEING TREATED-FEET - 630
Aircraft
- Registration
- N64580
- Reported as
- Bell 47D
- Category
- Helicopter
- Engine
- reciprocating
- Damage
- Substantial damage
- Airport
- Farm Pad
N64580Registration cancelled Jul 20, 2017 · Bell-Transworld Helicopters 47D1Airframe modelBell-Transworld Helicopters 47D1Engine modelFranklin 6A&6V335 series
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.
FAA reports on this event · 1
The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.
Other investigations on N64580 · 3
Matched to the same aircraft by N-number and date.
NTSB LAX03CA274Accident · Serious injuriesData collectionFinal reportChino, CAthe student pilot's inappropriate remedial action through the application of excessive aft cyclic during a run-on landing. A factor in the accident was the student's disregard for company procedures.NTSB LAX01FA236Accident · No injuriesField investigationFinal reportRiverside, CAThe engine crankshaft's failure as the result of fatigue cracking initiated by surface damage and localized overheating due to the installation at overhaul of incorrectly sized bearings.NTSB CHI79FEM21Accident · No injuriesClosedMiddleville, MI