Cirrus SR22-GTS N518SR

Summary

On 21 August 2006 at about 17:41 local time, a Cirrus SR22-GTS registered N518SR was involved in an accident near Mc Rae, Georgia, United States. 3 people were on board and nobody was injured. The aircraft was substantially damaged. The NTSB has published a probable cause for this accident; it is quoted in full below.

Date

21 August 2006 at 17:41

Classification

Accident

Location

Mc Rae, Georgia, United States

Nearest airport

Telfair-Wheeler Airport (KMQW)

Coordinates

32.0908, -82.8747

Aircraft

Cirrus SR22-GTS

Registration

N518SR

Category

Airplane

Engines

1

Operator

Not recorded

Operating rule

Part 91: General Aviation

Purpose of flight

Personal

Phase of flight

Not recorded

Route

Athens → Fort Lauderdale

Aircraft damage

Substantial

Weather

VMC

Light

Day

NTSB number

ATL06LA134

Nobody was injured.

The pilot's failure to use supplemental oxygen where required, and his failure to maintain sufficient airspeed to avoid a stall.

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

Read the full NTSB narrative

The airplane experienced an in-flight loss of aircraft control during cruise flight. The pilot initially reported a turbulence encounter at 9,500 feet, and that he saw damage on the upper surface of both wings. He did not recall a significant loss of altitude or loss of control. Data downloaded from the flight displays after the event indicated that the airplane actually climbed to 15,400 feet above mean sea level (msl), nearly 17,500 feet density altitude, which was the maximum operating altitude for the airplane. The airplane then slowed, stalled, and began a rapid descent, losing 13,000 feet of altitude in about 40 seconds before recovering. During recovery, the airplane had an average of more than 4 Gs vertical loading for more than 20 seconds. Such loading would likely have resulted in G-induced loss of consciousness (G-LOC) or near-loss of consciousness. The pilot's apparent failure to accurately recall the events of the flight is likely a result of the confusion associated with hypoxia, and the subsequent confusion and amnesia associated with G-LOC or near G-LOC. It is unclear exactly why the pilot chose to increase his altitude beyond 12,500 feet msl, above which oxygen use would have been required after 30 minutes. Regardless, he continued to climb the airplane above 14,000 feet msl, an altitude above which oxygen use would have been required by the pilot regardless of the time spent at that altitude, and he subsequently climbed to above 15,000 feet, at which point oxygen use would have been required by all occupants. The pilot confirmed that neither he nor his passengers used supplemental oxygen during the flight. Examination of the airplane found no evidence of mechanical failure or malfunctions that would have prevented the airplane from operating normally.

Quoted verbatim from the NTSB record.