Sikorsky S-58D N6488

Summary

On 6 August 1983 at about 20:10 local time, a Sikorsky S-58D registered N6488 was involved in an accident near Gatlingurg, Tennessee, United States. 3 people were on board and nobody was injured. The aircraft was substantially damaged. No probable cause statement is available for this record.

Date

6 August 1983 at 20:10

Classification

Accident

Location

Gatlingurg, Tennessee, United States

Coordinates

35.7202, -83.4892

Aircraft

Sikorsky S-58D

Registration

N6488

Category

Helicopter

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Other Work Use

Phase of flight

Not recorded

Route

Unknown → Sevierville

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

ATL83FA312

Nobody was injured.

The NTSB has not published a probable cause for this record. No probable cause statement is present in the source data.

Nothing about the cause is stated here that is not in the source record.

Read the full NTSB narrative

THE HELICOPTER COLLIDED WITH TERRAIN ON A WOODED MOUNTAINSIDE AFTER LIFTOFF. THE PLT SAID A POWER LOSS OCCURRED AFTER ITWAS TO LATE TO ABORT. TAKEOFF WAS MADE FROM A LOT THAT WAS 5200 FT MSL. THE PLT HOVER-CHECKED AT 2500 RPM AND 39.5 INCHES OF MANIFOLD PRESSURE PRIOR TO TRANSITION TO FORWARD FLT. THE ACFT CLIMBED ONLY 20 FT BEFORE POWERLOSS OCCURRED. THERE WERE NO CHIP LIGHTS OR UNUSUAL ENGINE GAGE READINGS. THIS WAS THE PLTS 65TH TRIP FOR THE DAY. DURING THE IMPACT THE THE RIGHT LANDING GEAR COLLAPSED. DURING THE INVESTIGATION THE COMPRESSION WAS FOUND TO BE LOW ON 4 CYLINDERS, TWO OF WHICH WERE ZERO. TSO WAS 573 HOURS. THE CARBURETOR INLET SCREEN WAS PARTIALLY BLOCKED WITH FIBER LINT. COMPRESSION WAS BEING LOST THROUGH THE EXHAUST VALVES. FUEL FILTER WERE PARTIALLY OBSTRUCTED WITH CONTAMINANTS FROM FUEL DRUMS AT A WORKSITE.

Quoted verbatim from the NTSB record.