# NTSB FTW87LA113: Boeing 707-323C, N8404, Oklahoma City, OK, May 1, 1987

- Type: NTSB accident investigation
- Classification: Accident · Minor injuries · Limited investigation · Final report
- Date: April 30, 1987, 20:05 local (May 1, 1987, 01:05 UTC)
- Place: Oklahoma City, OK
- Coordinates: 35.479179, -97.650375 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=35.4792&lon=-97.6504&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 1 minor, 3 uninjured; on the ground: 1 minor
- Status: Completed, report October 6, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 22360
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=FTW87LA113
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/22360/pdf
- Page: https://openairdocs.org/ntsb/FTW87LA113

## Sequence of events

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

- On ground/water collision with object, taxi
  - object - vehicle (contributing factor)
  - procedures/directives - disregarded, pilot in command (cause)
  - diverted attention, ground personnel (contributing factor)
  - visual lookout - poor, pilot in command (cause)
  - proper assistance - not received, pilot in command (contributing factor)

## Analysis

AFTER ENGINE START GROUND PERSONNEL EXPERIENCED DIFFICULTY DISCONNECTING THE AIRSTART UNIT HOSE. THE GROUND SIGNALMAN LEFT THE VIEW OF THE CREW TO ASSIST THE OTHER MEN IN AN EFFORT TO DISCONNECT THE UNIT FROM THE AIRCRAFT. THE PILOT ASSUMING THAT ALL WAS CLEAR, STARTED TO TAXI. THE SUBSTANTIAL DAMAGE TO THE AIRCRAFT'S RIGHT WING RESULTED FROM COLLISION WITH THE STARTING UNIT.

## Aircraft

- Registration: [N8404](https://openairdocs.org/deregistered/N8404-1994-06-23), registration cancelled 1994-06-23, S/N 19584 (OpenAirDocs)
- Reported make and model: BOEING 707-323C
- Registry model: [Boeing 707-323C](https://openairdocs.org/model/boeing-707-323c) (registry code 138367D) (OpenAirDocs)
- Category: Airplane
- Serial number: 19584
- Airframe hours: 37687
- Engines: P&W JT3D-3B 10000 lbs thrust turbo jet
- Damage: Substantial damage
- Flight: Part 121
- Airworthiness certificate: Standard, Transport
- Last inspection: AAIP, January 12, 1987
- Departed: OKC, OKLAHOMA CITY, OK
- Destination: ICT, WICHITA, KS
- Flight plan: IFR
- Airport: OKC, Will Rogers World Arpt.

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 41; airline transport; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 13,149 total, 283 in this make and model, 7,196 as pilot in command, 88 in the last 90 days, 11 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 200° at 16 knots
- Visibility: 20 statute miles
- Lowest ceiling: none
- Temperature: 86 °F, dew point 46 °F
- Altimeter: 29.00 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 19870430015319I](https://openairdocs.org/incident/19870430015319I), Apr 30, 1987: Boeing 707323C, Oklahoma City, OK, Substantial damage. The aircraft taxied into a ground cart. Signalman left position and pilot failed to wait for his return.

## Other investigations on N8404 (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 DEN91FA098](https://openairdocs.org/ntsb/DEN91FA098), Jul 9, 1991: Boeing 707-323C (N8404), Denver, CO, substantial damage. Probable cause: IMPROPER OVERHAUL OF THE NOSE GEAR ASSEMBLY BY OTHER MAINTENANCE PERSONNEL.

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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