Swearingen SA226TC N235BA

Summary

On 19 May 2000 at about 12:39 local time, a Swearingen SA226TC registered N235BA was involved in an accident near Denver, Colorado, United States. One person was on board and one had minor injuries. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

19 May 2000 at 12:39

Classification

Accident

Location

Denver, Colorado, United States

Nearest airport

Denver International (DVX)

Coordinates

39.7890, -104.8402

Aircraft

Swearingen SA226TC

Registration

N235BA

Category

Airplane

Engines

2

Operator

Not recorded

Operating rule

Part 135: Air Taxi & Commuter

Purpose of flight

Unknown

Phase of flight

Not recorded

Route

Unknown → Montrose

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

DEN00FA092

1 person had minor injuries.

propeller blade fatigue failure due to stress corrosion.

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

Read the full NTSB narrative

When the pilot added power for takeoff, at the origination of a cross-country cargo flight, he heard an impact sound on the right side of the airplane, and the right engine began to vibrate violently. He shut down both engines, declared an emergency, and when the engines had spooled down he exited the airplane. Inspection revealed the right hand propeller had shed a blade, which caused damage to the right engine mounts, right engine nacelle, and propeller shrapnel damage to the fuselage, right wing, and right flap. Examination provided evidence that the propeller blade fractured due to a fatigue crack that emanated from a stress corrosion crack region at the mid span portion on the flat side of the blade. The coating on the surface of the blade in the area of the stress corrosion cracking had been breached. The breach in the coating allowed corrosion media to attack the blade.

Quoted verbatim from the NTSB record.