DCA85AA020

NTSB accident investigation · Aerospatiale SA360C Dauphin · New York, NY · April 26, 1985

Accident · FatalFinal report
Date
April 26, 1985, 14:23 local (19:23 UTC)
Place
New York, NY
Injuries
1 fatal, 4 minor, 3 uninjured
Damage
Substantial damage
Phase of flight
Initial climb
Aircraft
N49505Aerospatiale SA360C Dauphin
Weather
Visual (VMC) · Day
Status
Completed
Report
Approved by Office Director
NTSB office
Major Investigations Division
FAA report
19850426077939A
Case key
15831

From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the accident.

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Sequence of events

NTSB’s coding before 2008: each occurrence and phase of flight, and the causes and factors under it. The codes are defined in NTSB’s coding manual.

Loss of engine powerTakeoff - initial climb
Maintenance,inspection - inadequateCompany maintenance personnelCause
Compressor assembly - contaminationCause
Compressor assembly,impeller - deterioratedCause
Fuel system,fuel control - output lowCause
In flight collision with terrain/waterTakeoff
Terrain condition - high obstruction(s)Factor
Weather condition - high density altitudeFactor
Weather condition - unfavorable windFactor
Weather condition - gustsFactor
Terrain condition - water,roughFactor
Miscellaneous/otherOther
Misc eqpt/furnishings,seat belt - other
Maintenance,service bulletin/letter - not followedCompany/operator managementFactor
Passenger briefing - inadequatePilot in commandFactor
Seat belt - improper use ofPassengerFactor

Analysis

At laguardia arpt, wnd was fm 320 deg at 16 gstg 22 KTS. PIC rprtd wnd at heliport (on west bank of east RVR) was fm sw. Obstacles were located along west edge of heliport. PIC rprtd he made pwr check, then bgn rolling takeoff with rgt qtrg hdwnd. As acft was climbing (aprx 5' AGL) ovr east edge of heliport, PIC noted a 'popping' sound, loss of eng pwr & mainrotor RPM, rise in EGT. Acft bgn settling & plt tried deploying emerg floats, but didn't have time. Acft impacted water,rolled ovr & sank. One pax did not egress & drowned with his seat belt still fastened. Investigation revealed the eng had errosion of 1st stage compressor blades, contamination on blades/compressor housing & a low fuel flow adjustment of the fuel control unit. There was evidence of eng surge/compressor stall. Density alt was 1600'. Four of 5 pax rprtd theydid not receive intruction on floatation devices/seat belts & they were not shown the briefing cards. Aerospatiale svc bulletin for improved type 343 seat belt buckles (to prevent blockage or failure to unlock) was not complied with.

Aircraft

Registration
N49505
Reported as
Aerospatiale SA360C Dauphin (SA360C DAU)
Category
Helicopter
Serial number
1006
Airframe hours
4,051
Engine
Turbomeca ASTAZOU-XVIII, turbo shaft
Damage
Substantial damage
Flight
Part 135
Registered owner
New York Helicopters
Airworthiness certificate
Standard, Transport
Last inspection
AAIP · March 30, 1985 · 85 hours before
Destination
JFK · New York, NY
Flight plan
VFR
Airport
6N5 · E34th Strett Heliport

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.

Flight crew

As NTSB recorded them. NTSB leaves out names.

Role
Pilot
Age
37
Certificates
Commercial, Airline transport
Airplane ratings
Single-engine land
Instrument ratings
Helicopter
Medical
Valid Medical--w/ waivers/lim
Seat
Right
Flight hours
4,445 total · 163 in this make and model · 4,000 as pilot in command · 100 in the last 90 days · 39 in the last 30 days · 1 in the last 24 hours

Weather

Conditions
Visual (VMC) · Day
Wind
320° at 16 knots, gusting 22
Visibility
15 statute miles
Lowest ceiling
None
Temperature
84 °F, dew point -0 °F
Altimeter
29.00 inHg
Observed at
LGA, 7 nm away

FAA reports on this event · 1

The FAA’s own accident and incident reports, matched to the aircraft by N-number and date.