# NTSB NYC84IA200: Boeing 720-025, N8711E, Philadelphia, PA, June 5, 1984

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: June 5, 1984, 13:12 local (17:12 UTC)
- Place: Philadelphia, PA
- Coordinates: 39.889488, -75.229927 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=39.8895&lon=-75.2299&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 95 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 35444
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC84IA200
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35444/pdf
- Page: https://openairdocs.org/ntsb/NYC84IA200

## Sequence of events

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

- Loss of engine power(partial) - mech failure/malf, takeoff - initial climb
  - turbine assembly - failure,total (cause)
  - emergency procedure - performed, pilot in command
  - fuel system,line - overload
- Fire, takeoff - initial climb

## Analysis

WHILE CLIMBING THRU 600 FT AFTER TAKEOFF, THE CREW HEARD A LOUD BANG, THE ACFT SHUTTERED & THE #3 ENG FIRE WARNING LIGHT ILLUMINATED. A FIRE BOTTLE WAS DISCHARGED. THE COPLT SAW FLAMES COMING FROM THE ENG & THE FIRE WARNING LIGHT REMAINED ILLUMINATED, SO A 2ND FIRE BOTTLE WAS DISCHARGED. THE AIRCREW RETURNED TO THE ARPT & LANDED WITHOUT FURTHER INCIDENT. EMERGENCY EQUIPMENT WAS STANDING BY & THE PASSENGERS DEPLANED NORMALLY. AN EXAM OF THE ENG REVEALED THAT THE 7TH STAGE TURBINE ASSEMBLY HAD FAILED, PENETRATING THE RIGHT SIDE OF THE CASE. THE 6TH & 8TH STAGES WERE DAMAGED BY THE DISPLACED 7TH STAGE ASSEMBLY. FUEL LINES & THE FIRE WARNING SYSTEM WERE ALSO DAMAGED.

## Aircraft

- Registration: [N8711E](https://openairdocs.org/deregistered/N8711E-2013-05-15), registration cancelled 2013-05-15, S/N 18240, built 1959 (OpenAirDocs)
- Reported make and model: BOEING 720-025
- Registry model: [Boeing 720-025](https://openairdocs.org/model/boeing-720-025) (registry code 1383818) (OpenAirDocs)
- Registry engine: [Pratt & Whitney JT3C-4&6](https://openairdocs.org/engine/pratt-whitney-jt3c-4-6) (registry code 52036, turbo-jet) (OpenAirDocs)
- Category: Airplane
- Serial number: 18240
- Airframe hours: 29560
- Engines: P&W JT3C-7 12000 lbs thrust turbo fan
- Damage: No damage
- Fire: In-Flight
- Flight: Part 91
- Registered owner: Windwalkers Air Country Club,
- Airworthiness certificate: Standard, Normal
- Departed: PHL, PHILADELPHIA, PA
- Destination: LAX, LOS ANGELES, CA
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 61; airline transport; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 1, invalid medical for flight; seat: left; flight hours: 30,000 total, 6,000 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 230° at 7 knots
- Visibility: 10 statute miles
- Lowest ceiling: none
- Temperature: 82 °F
- Altimeter: 30.00 inHg
- Observed at: PHL

## 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 19840605076219I](https://openairdocs.org/incident/19840605076219I), Jun 5, 1984: Boeing 720025, Philadelphia, PA, Minor damage. Seventh stage turbine assembly failed during climbout. Engine fire extinguished in flight. Landed safely.

## Other investigations on N8711E (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 FTW64A0051](https://openairdocs.org/ntsb/FTW64A0051), Dec 12, 1963: Boeing 720 (N8711E), New Orleans, LA, substantial damage

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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