# NTSB MIA86IA066: Boeing 747-123, N9674, Miami, FL, January 27, 1986

- Type: NTSB incident investigation
- Classification: Incident · Minor injuries · Incident investigation · Final report
- Date: January 27, 1986, 14:50 local (19:50 UTC)
- Place: Miami, FL
- Location: 25.7954° N, 80.2901° W: Placed by OpenAirDocs at MIAMI INTL (MIA), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=25.7954&lon=-80.2901&mi=10
- Phase of flight: [Initial climb](https://openairdocs.org/ntsb-phases/350) (OpenAirDocs' grouping)
- Highest injury: Minor injuries
- Injuries: 16 minor, 224 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 31522
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA86IA066
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31522/pdf
- Page: https://openairdocs.org/ntsb/MIA86IA066

## Sequence of events

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

- Airframe/component/system failure/malfunction, takeoff - initial climb
  - bleed air system,valve - failure,total (cause)
  - fuselage,crew compartment - smoke (contributing factor)
  - fuselage,cabin - smoke (contributing factor)
  - emergency procedure - initiated, pilot in command
  - precautionary landing - initiated, pilot in command
- Miscellaneous/other, standing
  - misc eqpt/furnishings,slides - failure,partial (cause)
  - maintenance,installation - improper, company maintenance personnel (cause)
  - maintenance,service of aircraft/equipment - improper, company maintenance personnel (cause)

## Analysis

SHORTLY AFTER DEPARTURE THE CREW NOTED SMOKE IN THE CABIN AND THE COCKPIT. THE CAPTAIN DECLARED AN EMERGENCY AND LANDED BACK AT THE DEPARTURE AIRPORT. HE THEN DIRECTED AN EMERGENCY EVACUATION. DURING THE EVACUATION SEVERAL EMERGENCY SLIDES FAILED TO DEPLOY AND SEVERAL PASSENGERS RECEIVED INJURIES. THE SLIDES FAILED DUE TO IMPROPER PACKING, MAINTENANCE, AND IMPROPER PARTS. THE SMOKE THAT WAS OBSERVED CAME FROM THE #4 ENGINE #3 BEARING LABYRINTH SEAL THAT LEAKED DUE TO THE FAILURE OF THE EVC CONTROLLER.

## Aircraft

- Registration: N9674 (not matched to a registry record)
- Reported make and model: BOEING 747-123
- Category: Airplane
- Serial number: 20326
- Airframe hours: 43473
- Engines: P&W JT9-D-7A 46150 lbs thrust turbo fan
- Damage: No damage
- Flight: Part 121
- Registered owner: Pan-American World Airways
- Airworthiness certificate: Standard, Transport
- Last inspection: Continuous airworthiness, December 17, 1985
- Departed: MIA, MIAMI, FL
- Destination: CCS, CARACAS, OF
- Flight plan: IFR
- Airport: MIA, Maimi Intl, runway 9R, 13,002 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; airline transport; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 10,700 total, 3,471 in this make and model

## Weather

- Conditions: Visual (VMC), Day
- Wind: 270° at 13 knots, gusting 18
- Visibility: 7 statute miles
- Lowest ceiling: 4,500 ft broken
- Temperature: 61 °F, dew point 45 °F
- Altimeter: 29.00 inHg
- Observed at: MIA, 1 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).

- [Incident 19860127044059I](https://openairdocs.org/incident/19860127044059I), Jan 27, 1986: Boeing 727123, Miami, FL. Aircraft returned after smoke noticed. Escape slides failed to deploy. Found faulty engine vane control unit.

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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