Rockwell S-2R N8482V

Summary

On 28 July 1999 at about 11:50 local time, a Rockwell S-2R registered N8482V was involved in an accident near Isola, Mississippi, United States. One person was on board and one was seriously injured. The aircraft was destroyed. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

28 July 1999 at 11:50

Classification

Accident

Location

Isola, Mississippi, United States

Coordinates

33.2593, -90.5903

Aircraft

Rockwell S-2R

Registration

N8482V

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 137: Agricultural

Purpose of flight

Aerial Application

Phase of flight

Not recorded

Route

Belzoni → Unknown

Aircraft damage

Destroyed

Weather

VMC

Light

Dawn

NTSB number

MIA99LA204

1 person was seriously injured.

Failure of the No. 4 cylinder due to a leaking intake valve resulting in loss of engine power and collision with a ditch while making a forced landing on unsuitable terrain. Contributing to the accident was improper maintenance adjustment of the engine valves and spark plugs.

Quoted verbatim from the NTSB record. This site does not paraphrase or interpret it.

Read the full NTSB narrative

While performing aerial application the pilot stated the engine backfired twice, lost oil pressure, backfired again, and then shutdown. While making a forced landing, the aircraft collided with a ditch and a post crash fired erupted. Postcrash examination of the engine under FAA supervision showed the No. 4 cylinder had compression of 35 over 80 psi and was leaking through the intake valve. Also, 7 of 18 valves were not adjusted within manufacturer's limits and all spark plug gaps were above manufacturer's limits.

Quoted verbatim from the NTSB record.