# NTSB ATL86FA020: Hawker Siddeley DH 125-400A, N100HF, Sparta, TN, November 7, 1985

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Field investigation · Final report
- Date: November 7, 1985, 07:35 local (13:35 UTC)
- Place: Sparta, TN
- Coordinates: 35.930324, -85.470947 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.9303&lon=-85.4709&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 4 minor
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 6905
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL86FA020
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/6905/pdf
- Page: https://openairdocs.org/ntsb/ATL86FA020

## Sequence of events

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

- Overrun, landing - roll
  - weather condition - rain
  - airport facilities,runway/landing area condition - foreign substance covered (cause)
  - information - not identified, airport personnel (cause)
  - facility inadequate, airport personnel
  - unsafe/hazardous condition warning - not issued, airport personnel (cause)
  - terrain condition - wet (cause)
  - runway maintenance - inadequate, airport personnel (cause)
  - aircraft performance,hydroplaning condition - water (cause)
  - landing gear,tire - pressure too low (contributing factor)
  - brakes(normal) - delayed, pilot in command (cause)
- On ground/water encounter with terrain/water, landing - roll
  - terrain condition - ditch

## Analysis

TEN MINUTES PRIOR TO LANDING HEAVY RAIN FELL ON AIRPORT.ACFT MAD NORMAL TOUCHDOWN,SPOILERS & LIFT DUMP ACTIVATED.PIC DELAYED BRAKE APPLICATION AS USUAL AND DID NOT GET THRUST LEVERS IN IDLE.AFTER ACFT PASSED MID-FIELD TAXIWAY PIC REPORTED BRAKES BECAME INEFFECTIVE.ACFT HYDROPLANED ON WATER-COVERED RUNWAY AND OVERRAN DEPARTURE END,DOWN AND EMBANKMENT, & HIT A DITCH.RUNWAY HAD AN OFF CENTER CROWN, GRASS WAS ABOUT TWO FEET TALL AT RUNWAY EDGE, AND A DAM HAD FORMED FROM PREVIOUSLY CUT GRASS WHICH PREVENTED WATER DRAINAGE.AIRPORT MANAGER SAID HE WAS NOT AWARE WATER WOULD STAND ON RUNWAY.

## Aircraft

- Registration: N100HF (not matched to a registry record)
- Reported make and model: HAWKER SIDDELEY DH 125-400A (DH 125-400)
- Category: Airplane
- Serial number: NA 717
- Airframe hours: 8461
- Engines: Garrett TFE 731-3-1H 3700 lbs thrust turbo jet
- Damage: Substantial damage
- Flight: Business, Part 91
- Operator: Hardee'S Food System, Inc.
- Airworthiness certificate: Standard, Transport
- Last inspection: Continuous airworthiness, October 16, 1985
- Departed: RWI, ROCKY MOUNT, NC
- Destination: SRB, SPARTA, TN
- Flight plan: IFR
- Airport: SRB, Sparta-White Co., runway 3, 5,006 × 75 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 31; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 5,161 total, 1,802 in this make and model, 2,700 as pilot in command, 173 in the last 90 days, 4 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Day
- Wind: 290° at 8 knots
- Visibility: 3 statute miles
- Lowest ceiling: 900 ft overcast
- Temperature: 50 °F, dew point 46 °F
- Altimeter: 29.00 inHg
- Observed at: BNA, 70 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 19851107056099A](https://openairdocs.org/incident/19851107056099A), Nov 7, 1985: Hwksly DH125400A, Sparta, TN, Substantial damage. Overran runway due to standing water on second half of runway. Airport UNICOM does not report runway condition.

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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