# NTSB ERA22LA103: Cessna 150G, N1308U, Knoxville, TN, January 8, 2022

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Class 4 · Limited · Final report
- Date: January 8, 2022, 16:00 local (21:00 UTC)
- Place: Knoxville, TN · Taxiway
- Coordinates: 35.963833, -83.873667 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.9638&lon=-83.8737&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Defining events: [Taxi: Ground collision](https://openairdocs.org/ntsb-events/200); [Taxi-to runway: Ground collision](https://openairdocs.org/ntsb-events/200)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed
- Report: Approved by Office Director
- Investigation class: Class 4 - Basic report with no Prelim publish
- NTSB office: Eastern Region Aviation
- Parties: FAA/FSDO
- NTSB case key (mKey): 104514
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ERA22LA103
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/104514/pdf
- NTSB docket: https://data.ntsb.gov/Docket?ProjectID=104514
- Page: https://openairdocs.org/ntsb/ERA22LA103

## Probable cause (aircraft 1)

The pilot of the Cessna 150’s failure to avoid the taxiing Cessna 172.

## Findings

NTSB's coded findings; those marked are part of the probable cause.

- [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot (probable cause), aircraft 1; cases with it: [Cessna 150G, 9 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=2071816), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md)
- [Light condition: glare](https://openairdocs.org/ntsb-findings/03036030): Environmental issues › Conditions/weather/phenomena · Contributed to outcome, aircraft 1; cases with it: [Cessna 150G, 1 case](https://openairdocs.org/ntsb-findings/03036030/cases.md?model=2071816), [All aircraft, 109 cases](https://openairdocs.org/ntsb-findings/03036030/cases.md)
- [Light condition: glare](https://openairdocs.org/ntsb-findings/03036030): Environmental issues › Conditions/weather/phenomena · Contributed to outcome, aircraft 2; cases with it: [Cessna 172L, 2 cases](https://openairdocs.org/ntsb-findings/03036030/cases.md?model=2072432), [All aircraft, 109 cases](https://openairdocs.org/ntsb-findings/03036030/cases.md)
- [Info processing/decision: decision making/judgment](https://openairdocs.org/ntsb-findings/02041520): Personnel issues › Action/decision · Pilot of other aircraft (probable cause), aircraft 2; cases with it: [Cessna 172L, 11 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md?model=2072432), [All aircraft, 3,098 cases](https://openairdocs.org/ntsb-findings/02041520/cases.md)

## Sequence of events

The events NTSB coded, in order, by phase of flight. The defining event best describes what happened.

- [Taxi: Ground collision](https://openairdocs.org/ntsb-events/200) (defining event), aircraft 1; cases with it: [Cessna 150G, 1 case](https://openairdocs.org/ntsb-events/200/sequence.md?model=2071816), [All aircraft, 618 cases](https://openairdocs.org/ntsb-events/200/sequence.md)
- [Taxi-to runway: Ground collision](https://openairdocs.org/ntsb-events/200) (defining event), aircraft 2; cases with it: [Cessna 172L, 5 cases](https://openairdocs.org/ntsb-events/200/sequence.md?model=2072432), [All aircraft, 618 cases](https://openairdocs.org/ntsb-events/200/sequence.md)

## Analysis (aircraft 1)

Two airplanes were taxiing when a ground collision occurred. According to the pilot of the Cessna 172, he was taxiing towards the run-up area, when he saw the engine start of a Cessna 150. He said it was stationary in a parking spot facing the taxiway as he proceeded forward. As he continued to taxi, he saw the right wing of the Cessna 150 pass under his wing toward his airplane. As he tried to avoid a collision, the right wing tip collided with the windscreen. During the collision the right aileron of the Cessna 150 sustained substantial damage. According to the pilot of the Cessna 150, he was preparing to exit the ramp area and taxi to runway 08. After making a radio call, he checked the taxiway for other aircraft, and said his sight was limited due to an airplane that was parked next to him. He said that he checked to see if any airplanes were on the taxiway and did not see any. He pulled out onto the taxiway and felt a slight bump when the Cessna 172 struck his airplane from behind. Both pilots reported no preimpact mechanical malfunctions or failures with the airplanes that would have precluded normal operation.

## Aircraft 1

- Registration: [N1308U](https://openairdocs.org/aircraft/N1308U), registered now, S/N 15065444, built 1966 (OpenAirDocs)
- Reported make and model: CESSNA 150G (NO SERIES)
- Registry model: [Cessna 150G](https://openairdocs.org/model/cessna-150g) (registry code 2071816) (OpenAirDocs)
- Registry engine: [Continental 0-200 series](https://openairdocs.org/engine/continental-0-200-series) (registry code 17020, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 15065444
- Year built: 1966
- Airframe hours: 7484
- Engines: Continental O-300 100 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Airworthiness certificate: Standard, Utility
- Last inspection: Annual, August 5, 2021
- Destination: Same as departure
- Airport: DKX, Knoxville Downtown Island
- Equipment: Unknown

## Aircraft 2

- Registration: [N19710](https://openairdocs.org/aircraft/N19710), registered now, S/N 17260691, built 1972 (OpenAirDocs)
- Reported make and model: CESSNA 172L
- Registry model: [Cessna 172L](https://openairdocs.org/model/cessna-172l) (registry code 2072432) (OpenAirDocs)
- Registry engine: [Lycoming 0-320 series](https://openairdocs.org/engine/lycoming-0-320-series) (registry code 41508, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 17260691
- Year built: 1972
- Airframe hours: 3824.3
- Engines: Lycoming O-320-E2D 150 horsepower reciprocating
- Damage: Minor damage
- Flight: Personal, Part 91
- Registered owner: Bremfour Aviation Group Inc
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, November 12, 2021, 80 hours before
- Destination: Same as departure
- Equipment: Electronic primary flight display, Electronic flight bag or handheld device, Angle of attack indicator, ADS-B, Stall warning system

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot, aircraft N1308U; age 56; injuries: none; flight instructor, commercial; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 3, with waivers/limitations; last flight review July 14, 2020; seat: left; restraint: lap only; flight hours: 2,106 total, 24 in this make and model, 49 in the last 90 days, 16 in the last 30 days, 2 in the last 24 hours
- Student pilot, aircraft N1308U; injuries: none; student; medical: unknown, unknown; seat: left; restraint: 3-point; flight hours: 203 total, 203 in this make and model
- Pilot, aircraft N19710; age 21; injuries: none; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 1, with waivers/limitations; last flight review May 18, 2021; seat: left; restraint: 3-point; flight hours: 121 total, 6 in this make and model, 25 as pilot in command, 5 in the last 90 days, 2 in the last 30 days

## Weather

- Conditions: Visual (VMC), Day
- Wind: 130° at 4 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 43 °F, dew point 28 °F
- Altimeter: 30.37 inHg
- Observed at: DKX
- METAR: METAR KDKX 082215Z AUTO 13004KT 10SM CLR 06/M02 A3037 RMK A01

## FAA reports on this event (2)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 20220108000382A](https://openairdocs.org/incident/20220108000382A), Jan 8, 2022: Cessna 150G, Knoxville, TN, Substantial damage. On January 08, 2022 at approximately 1700 hours a Cessna 150 (N1308U)collided with a Cessna 172 (N19710). The aircraft were taxiing to runway 8 at the Downtown…
- [Accident 20220108000372A](https://openairdocs.org/incident/20220108000372A), Jan 8, 2022: Cessna 172L, Knoxville, TN, Substantial damage. Pilot of aircraft, a Cessna 172, was taxied into by another aircraft.

## Docket (4 files)

The files NTSB released with the investigation on May 25, 2022, on NTSB's docket system: https://data.ntsb.gov/Docket?ProjectID=104514. 4.6 MB in all.

- Pilot/operator aircraft accident report, NTSB form 6120.1 N19710 (item 1, PDF, 11 pages, 2.1 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13169392&FileExtension=pdf&FileName=N19710%206120_Redacted-Rel.pdf
- Pilot/operator aircraft accident report, NTSB form 6120.1 N1308U (item 2, PDF, 11 pages, 1.9 MB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13169667&FileExtension=pdf&FileName=6120%20N1308U%20C150_Redacted-Rel.pdf
- Memorandum for record FAA damage assessment (item 3, PDF, 1 page, 96 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13169677&FileExtension=pdf&FileName=Memorandum%20Record%20FAA%20damage%20assessment%20LA103-Rel.pdf
- Photo array (item 4, PDF, 3 pages, 430 KB): https://data.ntsb.gov/Docket/Document/docBLOB?ID=13169585&FileExtension=pdf&FileName=Photo%20array%20LA103-Rel.pdf

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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