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NTSB Report
June 29, 1991 · Hughes 269A · N48323
Manassas, VA
Overview
Report Status
Probable Cause
Event Type
Accident
Date
June 29, 1991
Injury Outcomes
2 injuries (2 serious injuries)
Location
Manassas, VA
Aircraft
Hughes 269A
Tail Number
N48323
Operator
Dse
Injuries
Serious
Aircraft Damage
Substantial
NTSB Number
NYC91LA159
WHILE ON A LOCAL FLIGHT, THE PILOT EXECUTED A STEEP DESCENDING TURN TO APPROXIMATELY 150 AGL, TO OVERFLY THE PASSENGER'S HOUSE. SHORTLY AFTER LEVELING AT 150 FEET, WITH 'SLOW FORWARD AIRSPEED,' THE HELICOPTER MADE A 'SUDDEN QUICK TURN TO THE RIGHT AND PITCHED NOSE DOWN...,' DESCENDING INTO TREES. THE WIND AT THE TIME OF THE ACCIDENT WAS CALM. ACCORDING TO THE HEIGHT VELOCITY DIAGRAM FOR THE HUGHES 269A, OPERATION OF THE HELICOPTER AT 150 FEET AND ZERO TO 52 KNOTS OF INDICATED AIRSPEED SHOULD BE AVOIDED.
NTSB Probable Cause
THE PILOT'S IMPROPER INFLIGHT DECISION AND HIS FAILURE TO MAINTAIN PROPER AIRSPEED AT A LOW ALTITUDE WHICH RESULTED IN THE HELICOPTER SETTLING WITH POWER. A FACTOR IN THE ACCIDENT WAS THE PILOT'S FAILURE TO FOLLOW PRESCRIBED PROCEDURES/DIRECTIVES.
Full Narrative
WHILE ON A LOCAL FLIGHT, THE PILOT EXECUTED A STEEP DESCENDING TURN TO APPROXIMATELY 150 AGL, TO OVERFLY THE PASSENGER'S HOUSE. SHORTLY AFTER LEVELING AT 150 FEET, WITH 'SLOW FORWARD AIRSPEED,' THE HELICOPTER MADE A 'SUDDEN QUICK TURN TO THE RIGHT AND PITCHED NOSE DOWN...,' DESCENDING INTO TREES. THE WIND AT THE TIME OF THE ACCIDENT WAS CALM. ACCORDING TO THE HEIGHT VELOCITY DIAGRAM FOR THE HUGHES 269A, OPERATION OF THE HELICOPTER AT 150 FEET AND ZERO TO 52 KNOTS OF INDICATED AIRSPEED SHOULD BE AVOIDED.
Flight
Event TypeAccident
Event Time19:00 EDT
Nearest Airport0nm N
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo
Aircraft
AircraftHughes 269A
Tail NumberN48323
Aircraft CategoryHeli
DamageSubstantial
OperatorDse
Operating RulePart 91
Engines1
Engine TypeReciprocating
Engine DetailsLycoming · HIO-360-B1H · Reciprocating · 180
Seats2
People & Injuries
Injury Summary2 injuries (2 serious injuries)
Fatal0
Serious2
Minor0
Uninjured0
Total2
Crew 1Age 41 · Second Class
Conditions
ConditionsVMC
LightDaylight
WindCalm
Visibility5 sm
CeilingBroken clouds 8500 ft
Altimeter29.00 inHg
Observation Time22:50
Weather SourceWFAC