# NTSB FTW85LA027: Cessna 152, N49475, Lipan, TX, October 28, 1984

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: October 28, 1984, 17:15 local (23:15 UTC)
- Place: Lipan, TX
- Coordinates: 32.510353, -98.04 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=32.5104&lon=-98.0400&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 2 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 21611
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW85LA027
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/21611/pdf
- Page: https://openairdocs.org/ntsb/FTW85LA027

## Analysis

ACFT EXPERIENCED A PARTIAL ENG FAILURE IN FLIGHT. DURING THE FORCED LANDING, THE NOSE GEAR DUG INTO TERRAIN AND THE ACFT FLIPPED OVER. INVESTIGATION REVEALED THAT THE NO. 3 CYL BARREL WAS CRACKED ABOUT 90% AROUND THE CIRCUMFERENCE. METALLURGICAL EXAMINATION REVEALED THAT CRACK HAD INITIATED IN FATIGUE DUE TO IMPROPER MACHINING OF THE BARREL TO COOLING FIN RADIUS DURING MANUFACTURE. IN ADDITION, CORROSION PITTING IN THE AREA OF THE FATIGUE ORIGIN AGGRAVATED THE ORIGINAL DEFECT.

## Sequence of events

In NTSB's coding before 2008 (https://www.ntsb.gov/GILS/Documents/codman.pdf).

- Loss of engine power(partial) - mech failure/malf, cruise - normal
  - engine assembly,cylinder - cracked (cause)
  - inadequate quality control, manufacturer (cause)
  - engine assembly,cylinder - fatigue (cause)
  - inadequate quality control, manufacturer (cause)
- Forced landing, descent - emergency
- Nose over, landing - roll
  - terrain condition - wet (cause)
  - terrain condition - soft (cause)
  - terrain condition - none suitable (cause)

## Aircraft

- Registration: [N49475](https://openairdocs.org/deregistered/N49475-1997-08-21), registration cancelled 1997-08-21, S/N 15281297 (OpenAirDocs)
- Reported make and model: CESSNA 152
- Registry model: [Cessna 152](https://openairdocs.org/model/cessna-152) (registry code 2071835) (OpenAirDocs)
- Category: Airplane
- Serial number: 15281297
- Airframe hours: 1919
- Engines: LYCOMING O-235-L2C 110 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Operator: Aviation Ground School
- Registered owner: Thomas B. Blanton
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, August 9, 1984, 96 hours before
- Departed: FTW, FORT WORTH, TX
- Destination: ETN, EASTLAND, TX

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 24; commercial; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: right; flight hours: 542 total, 202 in this make and model, 419 as pilot in command, 115 in the last 90 days, 3 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 340° at 8 knots
- Visibility: 8 statute miles
- Lowest ceiling: none
- Temperature: 73 °F, dew point 55 °F
- Altimeter: 30.00 inHg
- Observed at: FTW, 50 nm away

## FAA reports on this event (1)

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

- [Accident 19841028061749A](https://openairdocs.org/incident/19841028061749A), Oct 28, 1984: Cessna 152, Lipan, TX, Substantial damage. Landed in field after being unable to maintain altitude due to engine power loss. Number 3 cylinder cracked.

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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