# NTSB CHI87IA039: Douglas DC-9-51, N786NC, Madison, WI, December 2, 1986

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: December 1, 1986, 23:26 local (Dec 2, 1986, 05:26 UTC)
- Place: Madison, WI
- Coordinates: 43.10062, -89.309631 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=43.1006&lon=-89.3096&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 114 uninjured
- Status: Completed, report April 25, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 13660
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI87IA039
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13660/pdf
- Page: https://openairdocs.org/ntsb/CHI87IA039

## Sequence of events

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

- Loss of control - on ground/water, landing - roll
  - weather condition - crosswind (contributing factor)
  - directional control - not maintained, pilot in command (cause)
  - ground loop/swerve - not corrected, pilot in command (cause)
  - weather condition - snow (contributing factor)
  - light condition - dark night (contributing factor)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - snow covered
- On ground/water collision with object, landing - roll

## Analysis

AIRCRAFT SLID OFF THE RIGHT SIDE THE RUNWAY DURING THE ROLLOUT FROM A CROSS WIND LANDING AND STRUCK 6 RUNWAY EDGE LIGHTS CAUSING MINOR DAMAGE TO THE INBOARD TRAILING EDGE OF THE RIGHT FLAP. AT THE TIME OF THE INCIDENT THERE WAS 1/2 INCH OF SNOW ON THE RUNWAY AND BRAKING ACTION WAS REPORTED AS POOR. THE PIC WAS ABLE TO REGAIN CONTROL AND RETURNED THE AIRCRAFT TO THE RUNWAY WHERE THE REMAINDER OF THE LANDING ROLL WAS COMPLETED WITHOUT FURTHER INCIDENT.

## Aircraft

- Registration: [N786NC](https://openairdocs.org/deregistered/N786NC-2014-06-17), registration cancelled 2014-06-17, S/N 48148, built 1980 (OpenAirDocs)
- Reported make and model: DOUGLAS DC-9-51 (DC9-51)
- Registry model: [Mcdonnell Douglas DC-9-51](https://openairdocs.org/model/mcdonnell-douglas-dc-9-51) (registry code 3022051) (OpenAirDocs)
- Registry engine: [Pratt & Whitney JT8D-17 series](https://openairdocs.org/engine/pratt-whitney-jt8d-17-series) (registry code 52049, turbo-jet) (OpenAirDocs)
- Category: Airplane
- Serial number: 48148
- Engines: P&W JT8D-17 turbo fan
- Damage: Minor damage
- Flight: Part 121
- Registered owner: Northwest Airlines
- Airworthiness certificate: Standard, Normal
- Departed: DTW, DETROIT, MI
- Flight plan: IFR
- Airport: MSN, Madison/Dane Cnty., runway 18, 9,005 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; airline transport; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 16,000 total, 5,000 in this make and model, 240 in the last 90 days

## Weather

- Conditions: Instrument (IMC), Night/dark
- Wind: 70° at 15 knots
- Temperature: 32 °F, dew point -0 °F
- Altimeter: 30.00 inHg

## 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 19861201075989I](https://openairdocs.org/incident/19861201075989I), Dec 1, 1986: Doug DC951, Madison, WI, Minor damage. Right main and nose gear departed runway side during rollout on wet snow. Damaged 5 runway lights. Crosswind factor

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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