# NTSB CHI85LA105: Cessna 172RG, N6464R, Lawrenceville, IL, February 9, 1985

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: February 9, 1985, 12:30 local (18:30 UTC)
- Place: Lawrenceville, IL
- Coordinates: 38.719715, -87.680801 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=38.7197&lon=-87.6808&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 2 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12998
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI85LA105
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12998/pdf
- Page: https://openairdocs.org/ntsb/CHI85LA105

## Sequence of events

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

- Gear collapsed, landing - flare/touchdown
  - gear down and locked - not attained, dual student (cause)
  - supervision - inadequate, pilot in command(cfi) (cause)

## Analysis

THE PRIVATE PLT & HIS INSTRUCTOR WERE PRACTICING INSTRUMENT APPROACHES. THE INSTRUCTOR STATED THAT THE FUEL GAGES WERE READING LOW & THE VOR NEEDLE WAS OSCILLATING, SO THEY DECIDED TO MAKE A STRAIGHT-IN LANDING. HE STATED THAT THEY LOWERED THE GEAR & FLAPS, BUT AFTER TOUCHING DOWN, THE MAIN GEAR FOLDED WITH THE NOSE GEAR LOCKED IN THE DOWN POSITION. AFTER THE ACFT WAS JACKED UP, AN OPERATIONAL CHECK OF THE GEAR WAS MADE. THE LANDING GEAR & ELECTRICAL SYS OPERATED NORMALLY. THE INSTRUCTOR PLT COULD NOT DEFINITELY SAY THAT HE OBSERVED A GEAR DOWN & LOCKED INDICATION.

## Aircraft

- Registration: [N6464R](https://openairdocs.org/aircraft/N6464R), registered now, S/N 172RG0184, built 1979 (OpenAirDocs)
- Reported make and model: CESSNA 172RG
- Registry model: [Cessna 172RG](https://openairdocs.org/model/cessna-172rg) (registry code 2072438) (OpenAirDocs)
- Registry engine: [Lycoming O&VO-360 series](https://openairdocs.org/engine/lycoming-o-vo-360-series) (registry code 41514, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 172RG0184
- Airframe hours: 2695
- Engines: LYCOMING O-360-F1A6 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Instructional, Part 91
- Registered owner: Board Of Trustees
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, April 26, 1984, 95 hours before
- Airport: LWV, Lawrenceville Vincennes, runway 9, 5,200 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 21; commercial, flight instructor; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 2, valid medical--no waivers/lim.; seat: right; flight hours: 337 total, 63 in this make and model, 218 as pilot in command, 20 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 140° at 10 knots
- Visibility: 8 statute miles
- Lowest ceiling: 20,000 ft overcast
- Temperature: 25 °F, dew point 10 °F
- Altimeter: 30.00 inHg
- Observed at: HUF, 45 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 19850209005159A](https://openairdocs.org/incident/19850209005159A), Feb 9, 1985: Cessna 172RG, Lawrenceville, IL, Substantial damage. Private and CFI pilots were late extending gear. Collapsed on landing. Fuel was low, straight in approach made.

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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