# NTSB SEA83IA116: Boeing 727-200, N296AS, Portland, OR, June 4, 1983

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: June 3, 1983, 18:20 local (Jun 4, 1983, 01:20 UTC)
- Place: Portland, OR
- Coordinates: 45.529026, -122.679313 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=45.5290&lon=-122.6793&mi=10
- Phase of flight: [Standing](https://openairdocs.org/ntsb-phases/150) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 133 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 39651
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=SEA83IA116
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/39651/pdf
- Page: https://openairdocs.org/ntsb/SEA83IA116

## Analysis

A BROKEN HYDRAULIC LINE NEAR THE LEFT MAIN LANDING GEAR ALLOWED HYDRAULIC FLUID TO LEAK ON TO THE APU EXHAUST. THE RESULTANT SMOKE THEN WAS PICKED UP BY THE LEFT AIRPACK AND WAS BLOWN INTO THE CABIN. THE CREW THEN ORDERED AN EVACUATIONOF THE PASSENGERS.

## Sequence of events

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

- Miscellaneous/other, standing
  - hydraulic system,line - failure,total (cause)
  - hydraulic system,line - fumes (contributing factor)

## Aircraft

- Registration: N296AS (not matched to a registry record)
- Reported make and model: BOEING 727-200
- Category: Airplane
- Serial number: 138407G
- Engines: P&W JT8D-15 15500 lbs thrust turbo jet
- Damage: No damage
- Flight: Part 121
- Operator: Alaska Airlines
- Registered owner: Alaska Airlines, Inc.
- Airworthiness certificate: Standard, Transport
- Flight plan: Unknown
- Airport: PDX, Portland International

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; airplane ratings: multi-engine land; instrument ratings: airplane; medical: unknown, unknown

## Weather

- Conditions: Visual (VMC), Day
- Visibility: 5 statute miles
- Observed at: PDX

## 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 19830603074589I](https://openairdocs.org/incident/19830603074589I), Jun 3, 1983: Boeing 727200, Portland, OR. Smoke in cabin. Aircraft evacuated at gate. Broken hydroline caused skydroll to vaporize. Discharge blew in cabin.

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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