# NTSB CHI89LA194: Piper PA-28-180, N44502, Mt. Horeb, WI, September 28, 1989

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Limited investigation · Final report
- Date: September 28, 1989, 17:00 local (22:00 UTC)
- Place: Mt. Horeb, WI
- Coordinates: 42.999702, -89.729347 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=42.9997&lon=-89.7293&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 1 uninjured
- Status: Completed, report October 24, 1990
- Report: Approved by Office Director
- NTSB case key (mKey): 14424
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI89LA194
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/14424/pdf
- Page: https://openairdocs.org/ntsb/CHI89LA194

## Probable cause

THE PILOT'S FAILURE TO FOLLOW PROPER PROCEDURES FOR BREAKING-IN NEW BRAKES AND THE EXCESSIVE TOUCHDOWN SPEED. CONTRIBUTING FACTORS WERE THE WORN BRAKES.

## Sequence of events

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

- Overrun, landing - roll
  - landing gear,normal brake system - worn (contributing factor)
  - procedures/directives - not followed, pilot in command (cause)
  - lowering of flaps - not performed, pilot in command
  - airspeed(vref) - excessive, pilot in command (cause)
- On ground/water collision with object, landing - roll
  - object - tree(s)

## Analysis

THE AIRCRAFT TOUCHED DOWN FAST IN GUSTY CROSSWIND CONDITIONS AND DID NOT STOP PRIOR TO THE DEPARTURE END OF THE RUNWAY, WHERE IT COLLIDED WITH EVERGREEN TREES. THE LANDING WAS THE FIRST LANDING MADE SINCE THE INSTALLATION OF A SET OF NEW METALLIC BRAKE LININGS. POST-ACCIDENT INVESTIGATION REVEALED EXCESSIVELY WORN BRAKE DISCS AND LININGS. THE PILOT INDICATED THAT RECOMMENDED BRAKE LINING BREAK-IN PROCEDURES HAD NOT BEEN ACCOMPLISHED.

## Aircraft

- Registration: [N44502](https://openairdocs.org/aircraft/N44502), registered now, S/N 28-7405248, built 1974 (OpenAirDocs)
- Reported make and model: PIPER PA-28-180
- Registry model: [Piper PA-28-180](https://openairdocs.org/model/piper-pa-28-180) (registry code 7102808) (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: 28-7405248
- Airframe hours: 2240
- Engines: LYCOMING O-360-A4A 180 horsepower reciprocating
- Damage: Substantial damage
- Flight: Business, Part 91
- Operator: James D. Malliet
- Registered owner: James D Malliet
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, November 17, 1988, 57 hours before
- Departed: FSD, SIOUX FALLS, SD
- Airport: C69, Gonstead, runway 36, 2,150 × 85 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 56; private; airplane ratings: single-engine land; medical: class 3, expired; seat: left; flight hours: 412 total, 355 in this make and model, 375 as pilot in command, 23 in the last 90 days, 14 in the last 30 days, 6 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 250° at 15 knots, gusting 21
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 73 °F, dew point 39 °F
- Altimeter: 30.00 inHg
- Observed at: MSN, 20 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 19890928037009A](https://openairdocs.org/incident/19890928037009A), Sep 28, 1989: Piper PA28180, Mount Horeb, WI, Substantial damage. Landed downwind and new brakes failed. Ran off runway into trees. Inadequate brake in and worn brake discs.

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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