# NTSB CHI83LER04: Cessna 170A, N9707A, Crystal, MN, August 14, 1983

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Final report
- Date: August 14, 1983, 16:00 local (21:00 UTC)
- Place: Crystal, MN
- Coordinates: 45.060054, -93.340049 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.0601&lon=-93.3400&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12362
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI83LER04
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12362/pdf
- Page: https://openairdocs.org/ntsb/CHI83LER04

## Sequence of events

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

- Loss of control - on ground/water, landing - flare/touchdown
  - landing gear,normal brake system - failure,total (cause)
  - maintenance,inspection - inadequate, other maintenance personnel (cause)
  - directional control - not possible, pilot in command (contributing factor)
  - ground loop/swerve - inadvertent, pilot in command

## Analysis

AS THE PLT APPLIED BRAKES THE ACFT VEERED OFF TO THE RIGHT. HE APPLIED LEFT RUDDER & LEFT BRAKE TO NO AVAIL, & THE ACFT GROUND-LOOPED OFF THE RIGHT SIDE OF THE RWY. THE LEFT BRAKE OUTER LINING WAS MISSING. THERE WERE TWO RIVETS MISSING & ONE RIVET HAD BROKEN. THE BACK PLATE WAS VERY RUSTY.

## Aircraft

- Registration: [N9707A](https://openairdocs.org/deregistered/N9707A-2013-09-11), registration cancelled 2013-09-11, S/N 19168, built 1949 (OpenAirDocs)
- Reported make and model: CESSNA 170A
- Registry model: [Cessna 170A](https://openairdocs.org/model/cessna-170a) (registry code 2072304) (OpenAirDocs)
- Registry engine: [Continental C145 series](https://openairdocs.org/engine/continental-c145-series) (registry code 17012, reciprocating) (OpenAirDocs)
- Category: Airplane
- Serial number: 19168
- Airframe hours: 3437
- Engines: CONTINENTAL C145-2 145 horsepower reciprocating
- Damage: Substantial damage
- Flight: Personal, Part 91
- Registered owner: Frank Lachinski
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, May 1, 1983, 9 hours before
- Departed: HILLMAN, MN
- Airport: MIC, Crystal Airport

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 38; private; airplane ratings: single-engine land; medical: class 3, expired; seat: left; flight hours: 200 total, 89 in this make and model, 136 as pilot in command, 6 in the last 90 days, 2 in the last 30 days, 1 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 20° at 3 knots
- Visibility: 20 statute miles
- Altimeter: 30.00 inHg
- Observed at: MIC

## 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 19830814041099A](https://openairdocs.org/incident/19830814041099A), Aug 14, 1983: Cessna 170A, Crystal, MN, Substantial damage. Aircraft ground looped during high speed turn off runway after landing.

## Other investigations on N9707A (1)

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.

- [NTSB MKC72DER48](https://openairdocs.org/ntsb/MKC72DER48), Apr 1, 1972: Cessna 170A (N9707A), Anoka, MN, substantial damage

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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