Beechcraft D-35 N2934B

Summary

On 23 August 1999 at about 23:54 local time, a Beechcraft D-35 registered N2934B was involved in an accident near Seminole, Oklahoma, United States. One person was on board and one died. The aircraft was destroyed. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

23 August 1999 at 23:54

Classification

Accident

Location

Seminole, Oklahoma, United States

Nearest airport

Seminole Municipal (H45)

Coordinates

35.0805, -96.3896

Aircraft

Beechcraft D-35

Registration

N2934B

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Business

Phase of flight

Not recorded

Route

Tulsa → Unknown

Aircraft damage

Destroyed

Weather

VMC

Light

Day

NTSB number

FTW99FA235

1 person died.

The loss of engine power caused by oil starvation, which resulted in the failure of the #6 cylinder connecting rod bolts. A factor was the pilot's performance of an evasive maneuver to avoid impacting buildings, trees, people on the ground, and power lines.

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

Read the full NTSB narrative

The airplane was inbound to the airport when the engine lost power. Subsequently, the pilot lost control of the airplane while maneuvering to avoid a business, trees, a residence, people on the ground, and power lines. The airplane impacted the terrain in a nose low attitude and was destroyed by the impact sequence, ensuing explosion, and fire. A hole was found in the crankcase of the Continental E-225-8 engine over the #6 cylinder, and the #6 connecting rod was found separated from the rod journal. An engine teardown revealed that the engine exhibited a massive oil starvation event. The #6 connecting rod was disconnected from the crankshaft journal due to the heat of the oil starvation event, which resulted in the failure of the connecting rod bolts in ductile overload from the elevated temperature. The reason for the oil starvation could not be determined by examination of the engine or the airplane wreckage. The maintenance records were destroyed by the post-impact fire, and the maintenance history for the engine could not be determined.

Quoted verbatim from the NTSB record.