# NTSB CHI84IA246: Mcdonnell Douglas DC-8-73, N4867T, Chicago, IL, June 18, 1984

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: June 18, 1984, 10:30 local (15:30 UTC)
- Place: Chicago, IL
- Location: 41.9769° N, 87.9081° W: Placed by OpenAirDocs at CHICAGO O'HARE INTL (ORD), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=41.9769&lon=-87.9081&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 12452
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI84IA246
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/12452/pdf
- Page: https://openairdocs.org/ntsb/CHI84IA246

## Sequence of events

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

- Airframe/component/system failure/malfunction, landing - roll
  - hydraulic system,fitting - failure,partial (cause)
  - fluid,hydraulic - leak (cause)
  - landing gear,anti-skid brake system - incorrect (contributing factor)

## Analysis

DURING DESCENT, FLT ENGINEER NOTICED THE HYDRAULIC FLUID LEVEL WAS LOW. ACFT LANDED WITH LOCKED BRAKES ON ALL 4 WHEELS OF THE RT MAIN GEAR AND ALL 4 TIRES WERE BLOWN OUT. TWO HYDRAULIC LINE FITTINGS ON THE RUDDER HYDRAULIC BOOSTER PACKAGE WERE FOUND TO BE THE SOURCE OF THE HYDRAULIC FLUID LOSS. THE ANTI-SKID CONTROL BOX WAS FOUND TO BE OUT OF SPECIFICATIONS.

## Aircraft

- Registration: N4867T (not matched to a registry record)
- Reported make and model: MCDONNELL DOUGLAS DC-8-73
- Category: Airplane
- Serial number: 46090
- Engines: GE CFM-58 turbo fan
- Damage: Minor damage
- Flight: Positioning, Part 91
- Registered owner: Trans American Airlines, Inc.
- Airworthiness certificate: Standard, Transport
- Departed: FRF, CHICAGO, IL
- Flight plan: IFR
- Airport: ORD, O'Hare Iap, runway 27, 10,141 × 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: unknown, unknown; seat: left

## Weather

- Conditions: Visual (VMC), Day
- Wind: 260° at 20 knots
- Lowest ceiling: none
- Temperature: 79 °F

## 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 19840618050989I](https://openairdocs.org/incident/19840618050989I), Jun 18, 1984: Doug DC863F, Chicago, IL. Hydraulic fluid quantity dropped to zero. All wheels locked on landing. Tires blew. Hydraulic leak in aft fuselage.

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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