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June 23, 1988 · Sikorsky S-76A · N54C

Moundsville, WV

Overview

Report Status
Preliminary report
Event Type
Accident
Date
June 23, 1988
Injury Outcomes
2 injuries (2 minor injuries), 4 uninjured
Location
Moundsville, WV
Aircraft
Sikorsky S-76A
Tail Number
N54C
Injuries
Minor
Aircraft Damage
Destroyed
NTSB Number
BFO88LA058

THE HELICOPTER CONTACTED POWER LINES SHORTLY AFTER TAKEOFF FROM A MINE SITE. THE NOSE GEAR OF THE HELICOPTER CONTACTED AN UNINSULATED STATIC WIRE. THIS WIRE WAS STRUNG WITH ONE OTHER STATIC WIRE AND TWO BLACK INSULATED POWER LINES. BOTH CREW MEMBERS STATED THAT THEY SAW THE BLACK LINES AND BELIEVED THEIR RATE OF CLIMB WOULD ALLOW ADEQUATE CLEARANCE. AFTERHITTING THE FIRST SET OF LINES, THE HELICOPTER BEGAN A DESCENDING TURN AND THEN CONTACTED A SECOND SET OF POWER LINES ALONG WITH A POWER POLE. THE HELICOPTER THEN COLLIDED WITH A SWITCHING HOUSE AND CAME TO REST ALONGSIDE A EARTHEN SUPPLYSLOPE. NONE OF THE WIRES WERE MARKED. THE CAPTAIN STATED THAT HE DID NOT SEE THE SILVER COLORED STATIC WIRES.

Full Narrative

THE HELICOPTER CONTACTED POWER LINES SHORTLY AFTER TAKEOFF FROM A MINE SITE. THE NOSE GEAR OF THE HELICOPTER CONTACTED AN UNINSULATED STATIC WIRE. THIS WIRE WAS STRUNG WITH ONE OTHER STATIC WIRE AND TWO BLACK INSULATED POWER LINES. BOTH CREW MEMBERS STATED THAT THEY SAW THE BLACK LINES AND BELIEVED THEIR RATE OF CLIMB WOULD ALLOW ADEQUATE CLEARANCE. AFTERHITTING THE FIRST SET OF LINES, THE HELICOPTER BEGAN A DESCENDING TURN AND THEN CONTACTED A SECOND SET OF POWER LINES ALONG WITH A POWER POLE. THE HELICOPTER THEN COLLIDED WITH A SWITCHING HOUSE AND CAME TO REST ALONGSIDE A EARTHEN SUPPLYSLOPE. NONE OF THE WIRES WERE MARKED. THE CAPTAIN STATED THAT HE DID NOT SEE THE SILVER COLORED STATIC WIRES.

Flight

Event TypeAccident
Event Time16:42 EDT
Nearest Airport0nm
Runway0
Flight Plan FiledNone
Aircraft FireNo
Aircraft ExplosionNo

Aircraft

AircraftSikorsky S-76A
Tail NumberN54C
Aircraft CategoryHeli
DamageDestroyed
Operating RulePart 91
Engines2
Engine TypeTurboshaft
Engine DetailsAllison · 250-C30 · Turboshaft · 650
Seats10

People & Injuries

Injury Summary2 injuries (2 minor injuries), 4 uninjured
Fatal0
Serious0
Minor2
Uninjured4
Total6
Crew 1Age 51 · First Class

Conditions

ConditionsVMC
LightDaylight
Wind30° @ 10 kt
Visibility10 sm
CeilingNone
Temperature / Dew Point52
Altimeter30.00 inHg
Observation Time20:45
Weather SourceWFAC

Appendix: Source Data