# NTSB CHI85LA033: Cessna 172, N66964, Chicago, IL, October 28, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: October 28, 1984, 12:10 local (18:10 UTC)
- Place: Chicago, IL
- Coordinates: 41.77935, -87.76995 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=41.7794&lon=-87.7699&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12946
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI85LA033
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12946/pdf
- Page: https://openairdocs.org/ntsb/CHI85LA033

## Sequence of events

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

- Hard landing, landing - flare/touchdown
  - landing gear,tire - burst
  - flare - improper, pilot in command (cause)

## Analysis

THE PVT PLT STATED THAT HE WAS AWARE OF A NOSE WHEEL SHIMMY ON THE ACFT BEFORE FLT BUT WAS ADVISED BY THE OPERATOR THAT IT WAS SAFE TO FLY. HE STATED THAT UPON LANDING, WHEN THE NOSE WHEEL TOUCHED DOWN, IT BEGAN TO SHIMMY VIOLENTLY AND THE NOSE TIRE BLEW. INSPECTION REVEALED DAMAGE TO THE ACFT FIREWALL.

## Aircraft

- Registration: [N66964](https://openairdocs.org/aircraft/N66964), registered now, S/N 17275994 (OpenAirDocs)
- Reported make and model: CESSNA 172
- Registry model: [Cessna 172P](https://openairdocs.org/model/cessna-172p) (registry code 2072436) (OpenAirDocs)
- Category: Airplane
- Serial number: 17275994
- Airframe hours: 833
- Engines: LYCOMING O-320-D2J 160 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Ciel Leasing, Inc.
- Airworthiness certificate: Standard, Normal
- Last inspection: 100 hour, October 9, 1984, 32 hours before
- Airport: MDW, Midway, runway 31R, 5,390 × 175 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 79; private; airplane ratings: single-engine land; medical: class 3, valid medical--w/ waivers/lim; flight hours: 713 total, 14 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 320° at 12 knots, gusting 16
- Visibility: 5 statute miles
- Lowest ceiling: 1,800 ft broken
- Temperature: 61 °F, dew point 39 °F

## 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 19841028061799A](https://openairdocs.org/incident/19841028061799A), Oct 28, 1984: Cessna 172P, Chicago, IL, Substantial damage. Nose wheel shimmied violently on touch down then ruptured the nosewheel tire. Operator advised shimmy no problem.

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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