# NTSB CHI87IA110: Cessna 172L, N4211Q, Plainfield, IL, March 29, 1987

- Type: NTSB incident investigation
- Classification: Incident · Fatal · Incident investigation · Final report
- Date: March 29, 1987, 16:58 local (22:58 UTC)
- Place: Plainfield, IL
- Coordinates: 41.610237, -88.199638 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.6102&lon=-88.1996&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed, report July 10, 1989
- Report: Approved by Office Director
- NTSB case key (mKey): 13842
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI87IA110
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13842/pdf
- Page: https://openairdocs.org/ntsb/CHI87IA110

## Sequence of events

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

- Miscellaneous/other, standing - engine(s) operating
  - exhaust system,muffler - cracked (cause)
  - maintenance,annual inspection - inadequate, other maintenance personnel (cause)
  - exhaust system,muffler - leak (cause)
  - incapacitation(carbon monoxide), pilot in command

## Analysis

THE PILOT DECIDED THE WEATHER WAS NOT GOOD ENOUGH TO FLY, BUT HE WOULD RUN THE ENGINE AND TURN THE TIRES. HE WAS DISCOVERED IN THE PLANE BY OTHER PILOTS AND LATER PRONOUNCED DEAD, FROM CARBON MONOXIDE ASPHYXIATION. THE MUFFLER HAD A 12 INCH CRACK WHICH A METALLURGIST STATED COULD NOT HAVE OCCURRED IN THE 1.1 HOURS SINCE THE PLANE'S ANNUAL INSPECTION.

## Aircraft

- Registration: [N4211Q](https://openairdocs.org/aircraft/N4211Q), registered now, S/N 17260111, built 1971 (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: 17260111
- Airframe hours: 1968
- Engines: LYCOMING O-320-E2D 150 horsepower reciprocating
- Damage: No damage
- Flight: Personal, Part 91
- Registered owner: Patricia A. Langvis
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, December 8, 1986, 1 hours before
- Departed: 1C5, PLAINFIELD, IL
- Airport: 1C5, Clow Int'L

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 56; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 630 total

## Weather

- Conditions: Instrument (IMC), Dusk
- Wind: 10° at 13 knots
- Visibility: 3 statute miles
- Lowest ceiling: 600 ft overcast
- Temperature: 37 °F, dew point 34 °F
- Altimeter: 29.00 inHg
- Observed at: MDW, 49 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).

- [Incident 19870329065669I](https://openairdocs.org/incident/19870329065669I), Mar 29, 1987: Cessna 172L, Plainvield, IL, 1 fatal. The pilot lost consciousness while ground running the engine. Crack found around exhaust muffler.

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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