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NTSB Report
July 31, 1992 · Hughes 369D · N64MK
Honolulu, HI
Overview
Report Status
Probable Cause
Event Type
Accident
Date
July 31, 1992
Injury Outcomes
No injuries (2 uninjured)
Location
Honolulu, HI
Aircraft
Hughes 369D
Tail Number
N64MK
Operator
Pce
Injuries
None
Aircraft Damage
Substantial
NTSB Number
LAX92LA326
ACCORDING TO THE STATEMENTS BY BOTH PILOTS, THE PURPOSE OF THE FLIGHT WAS TO CHECK OUT A NEW FLIGHT INSTRUCTOR ON THE HELICOPTER TYPE. WHILE PRACTICING AN AUTO ROTATION TO TOUCHDOWN, THE NEW FLIGHT INSTRUCTOR OVER ROTATED DURING THE FLARE AND SCRAPED THE TAIL SKID ON THE PAVEMENT. IN HIS STATEMENT, THE NEW FLIGHT INSTRUCTOR SAID HE THEN PULLED UP ON THE COLLECTIVE AND THE HELICOPTER BALLOONED UPWARD TO ABOUT 15 FEET AGL. THE MAIN ROTOR SPEED WAS LOW, AND, AS A RESULT, THE HELICOPTER LANDED HARD. THE MAIN ROTOR THEN FLEXED DOWNWARD AND SEVERED THE TAIL BOOM. THE FLIGHT INSTRUCTOR WHO WAS CHECKING OUT THE NEW PILOT SAID HE HAD HIS HANDS ON THE CONTROLS DURING THE MANEUVER BUT WAS 'UNABLE TO CORRECT FOR THE UNEXPECTED INPUT BY [THE STUDENT]' IN TIME TO PREVENT THE BALLOON AND THE SUBSEQUENT HARD LANDING.
NTSB Probable Cause
THE STUDENT'S IMPROPER USE OF THE FLIGHT CONTROLS DURING AN ATTEMPTED RECOVERY FROM AN OVER ROTATION DURING THE FLARE, AND, THE FLIGHT INSTRUCTOR'S INADEQUATE SUPERVISION OF THE FLIGHT.
Full Narrative
ACCORDING TO THE STATEMENTS BY BOTH PILOTS, THE PURPOSE OF THE FLIGHT WAS TO CHECK OUT A NEW FLIGHT INSTRUCTOR ON THE HELICOPTER TYPE. WHILE PRACTICING AN AUTO ROTATION TO TOUCHDOWN, THE NEW FLIGHT INSTRUCTOR OVER ROTATED DURING THE FLARE AND SCRAPED THE TAIL SKID ON THE PAVEMENT. IN HIS STATEMENT, THE NEW FLIGHT INSTRUCTOR SAID HE THEN PULLED UP ON THE COLLECTIVE AND THE HELICOPTER BALLOONED UPWARD TO ABOUT 15 FEET AGL. THE MAIN ROTOR SPEED WAS LOW, AND, AS A RESULT, THE HELICOPTER LANDED HARD. THE MAIN ROTOR THEN FLEXED DOWNWARD AND SEVERED THE TAIL BOOM. THE FLIGHT INSTRUCTOR WHO WAS CHECKING OUT THE NEW PILOT SAID HE HAD HIS HANDS ON THE CONTROLS DURING THE MANEUVER BUT WAS 'UNABLE TO CORRECT FOR THE UNEXPECTED INPUT BY [THE STUDENT]' IN TIME TO PREVENT THE BALLOON AND THE SUBSEQUENT HARD LANDING.
Flight
Event TypeAccident
Event Time11:40 HST
Nearest AirportHonolulu International (0nm N)
Runway8
Runway Length12300 ft
Runway Width150 ft
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHughes 369D
Tail NumberN64MK
Aircraft CategoryHeli
DamageSubstantial
OperatorPce
Operating RulePart 91
Engines1
Engine TypeTurboshaft
Engine DetailsAllison · 250-C20B · Turboshaft · 317
Seats5
People & Injuries
Injury SummaryNo injuries (2 uninjured)
Fatal0
Serious0
Minor0
Uninjured2
Total2
Crew 1Age 25 · Second Class
Conditions
ConditionsVMC
LightDaylight
Wind80° @ 9 kt
Visibility20 sm
CeilingNone
Temperature / Dew Point0 C
Altimeter0
Weather SourcePILO