# NTSB MKC84IA018: Boeing 727-15C, N436EX, St. Louis, MO, November 10, 1983

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: November 10, 1983, 05:37 local (11:37 UTC)
- Place: St. Louis, MO
- Location: 38.7487° N, 90.3700° W: Placed by OpenAirDocs at ST LOUIS LAMBERT INTL (STL), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=38.7487&lon=-90.3700&mi=10
- Phase of flight: [Taxi](https://openairdocs.org/ntsb-phases/250) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 33570
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MKC84IA018
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/33570/pdf
- Page: https://openairdocs.org/ntsb/MKC84IA018

## Sequence of events

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

- Propeller blast or jet exhaust/suction, taxi - to takeoff
  - object - aircraft moving on ground (contributing factor)
  - clearance - not maintained, pilot of other aircraft (cause)
  - identification of aircraft visually - not performed, atc personnel(lcl/gnd/clnc) (contributing factor)
  - identification of aircraft visually - not performed, ground personnel (contributing factor)

## Analysis

THE PILOT REPORTED THAT AFTER ENGINE START THE ACFT WAS DIRECTED BY THE TOWER TO TAXI FOR TAKEOFF. THE MARSHALLER MOTIONED HIM FORWARD AND HE ADVANCED THE POWER TO 65 PERCENT TO BREAK AWAY AND THEN REDUCED IT TO IDLE. AT NO TIME WAS THE PILOT ADVISED THAT AN ACFT WAS BEHIND HIM. THE EXHAUST OF THE JET ENGINE LIFTED THE WING OF A CESSNA 206 WHICH WAS TAXIING BEHIND THE BOEING 727. THE RIGHT WING STRUCK THE GROUND SUSTAINING MINOR DAMAGE. THE CREW OF THE BOEING 727 WAS UNAWARE OF WHAT HAD HAPPENED.

## Aircraft

- Registration: [N436EX](https://openairdocs.org/deregistered/N436EX-2005-04-11), registration cancelled 2005-04-11, S/N 19289, built 1967 (OpenAirDocs)
- Reported make and model: BOEING 727-15C
- Registry model: [Boeing 727-51C](https://openairdocs.org/model/boeing-727-51c) (registry code 1384015) (OpenAirDocs)
- Registry engine: [Pratt & Whitney JT8D series](https://openairdocs.org/engine/pratt-whitney-jt8d-series) (registry code 52053, turbo-jet) (OpenAirDocs)
- Category: Airplane
- Serial number: 19289
- Airframe hours: 1242
- Engines: P&W JT&D-7B 17000 lbs thrust turbo fan
- Damage: No damage
- Flight: Part 121
- Operator: International Air Services Co.
- Registered owner: Emery Aircraft Leasing
- Airworthiness certificate: Standard, Transport
- Destination: OKC, OKLAHOMA CITY, OK
- Flight plan: IFR
- Airport: STL, Lambert Field

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 42; commercial, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 6,550 total, 2,525 in this make and model, 11 as pilot in command

## Weather

- Conditions: Instrument (IMC), Night/dark
- Wind: 220° at 8 knots
- Visibility: 3 statute miles
- Lowest ceiling: 600 ft overcast
- Temperature: 43 °F, dew point 43 °F
- Altimeter: 29.00 inHg
- Observed at: STL

## 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 19831110069039I](https://openairdocs.org/incident/19831110069039I), Nov 10, 1983: Boeing 72751C, St Louis, MO. Taxing for takeoff. Making a right turn. Jet blast damaged a Cessna 206 waiting to taxi behind the jet.

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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