ASN Wikibase Occurrence # 264374
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| Date: | Monday 21 June 2021 |
| Time: | 09:30 |
| Type: |  Cirrus SR22T GTS X |
| Owner/operator: | Skylane Partners LLC |
| Registration: | N333LZ |
| MSN: | 0243 |
| Year of manufacture: | 2011 |
| Total airframe hrs: | 1217 hours |
| Engine model: | Continental TSIO-550-K1B |
| Fatalities: | Fatalities: 1 / Occupants: 1 |
| Aircraft damage: | Substantial |
| Category: | Accident |
| Location: | near Mercer, TN -
 United States of America
|
| Phase: | En route |
| Nature: | Private |
| Departure airport: | Memphis International Airport, TN (MEM/KMEM) |
| Asheville Regional Airport, NC (AVL/KAVL) | |
| Investigating agency: | NTSB |
| Confidence Rating: |  Accident investigation report completed and information captured |
On June 21, 2021, about 0930 central daylight time, a Cirrus Design Corporation SR22T, N333LZ, was substantially damaged when it was involved in an accident near Mercer, Tennessee. The pilot was fatally injured. The airplane was operated as a Title 14 Code of Federal Regulations Part 91 personal flight.
While climbing to cruise altitude during a cross-country flight, the pilot advised the air traffic controller that the airplane was experiencing engine issues associated with manifold pressure and requested to divert to an airport where the airplane was maintained; however, this was not the nearest airport. The pilot further stated that he was not declaring an emergency. The controller cleared the airplane to the requested airport with a descent to 3,000 ft msl at the pilot’s discretion, and subsequently transferred communications to the controller at the diversion airport. The controller advised the pilot that he needed to maintain 2,500 ft msl, which was the minimum vectoring altitude (MVA). The airplane gradually descended below the MVA, and the controller advised the pilot that a closer airport was located on his right side (about 10 nm); however, the pilot continued to the diversion airport (about 27 nm). When the controller asked if the pilot was going to use the airframe parachute, the pilot indicated that he was attempting to land in a field. The airplane impacted trees and came to rest in a field about 10 miles from the diversion airport.
Data retrieved from the airplane’s Recoverable Data Module (RDM) revealed that the manifold air pressure (MAP) limit was exceeded about 10 minutes into the flight, reaching a peak recorded value of 53.9 inches. The maximum normal operating range for MAP for the airplane according to the pilot operating handbook (POH) was 36.5 inches. The MAP fluctuated from the time of the exceedance until the end of the data, about 19 minutes later.
Examination of the engine revealed that the left turbocharger waste gate contained a small metal fragment wedged between the housing and the valve, which was about 75% closed. Metallurgical examination of the fragment revealed it was consistent with stainless steel. Review of the airplane’s maintenance records revealed that the left turbocharger was replaced 3 months before the accident during the most recent annual inspection. It is likely that the maintenance performed on the airplane during the inspection resulted in foreign object deposited into the exhaust system and jammed the waste gate, resulting in an overboost of the turbocharger and partial loss of engine power.
Probable Cause: A partial loss of engine power due to foreign object debris contamination of the left turbocharger wastegate. Contributing to the accident was the pilot’s failure to divert to the nearest airport.
Accident investigation:
 |
|
Sources:
https://www.wbbjtv.com/2021/06/21/1-dead-after-small-plane-crash-in-mercer/
https://dailymemphian.com/article/22612/memphis-civic-leader-george-cates-dies-plane-crash?
https://www.wbbjtv.com/2021/06/21/officials-share-details-on-morning-plane-crash-that-killed-pilot/
NTSB
https://registry.faa.gov/aircraftinquiry/Search/NNumberResult?nNumberTxt=333LZ
https://flightaware.com/live/flight/N333LZ
https://www.aircraft.com/aircraft/1405499/n333lz-2011-cirrus-sr22-g3-turbo (photos)
Location
Images:
Media:
NTSB is investigating the June 21, 2021, crash of a Cirrus SR-22 near Mercer, Tennessee. An NTSB investigator is expected to arrive on scene Tuesday morning.
— NTSB_Newsroom (@NTSB_Newsroom) June 21, 2021
Revision history:
| Date/time | Contributor | Updates |
|---|---|---|
| 21-Jun-2021 21:25 | Captain Adam | Added |
| 21-Jun-2021 22:18 | Captain Adam | Updated [Aircraft type, Registration, Cn, Operator, Phase, Nature, Departure airport, Destination airport, Source, Embed code, Damage, Narrative] |
| 22-Jun-2021 00:43 | RobertMB | Updated [Time, Aircraft type, Location, Destination airport, Source, Damage, Narrative] |
| 21-Jul-2021 08:00 | aaronwk | Updated [Time, Destination airport, Source, Narrative, Category] |
| 22-Jun-2023 21:37 | Captain Adam | Updated [[Time, Destination airport, Source, Narrative, Category]] |
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