# NTSB DCA84AA006: Boeing 727-225A, N812EA, Miami, FL, November 12, 1983

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Final report
- Date: November 11, 1983, 21:00 local (Nov 12, 1983, 02:00 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: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 1 serious, 158 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB office: Major Investigations Division
- Safety recommendations: Yes
- NTSB case key (mKey): 15798
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DCA84AA006
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15798/pdf
- Page: https://openairdocs.org/ntsb/DCA84AA006

## Sequence of events

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

- Airframe/component/system failure/malfunction, climb - to cruise
  - landing gear,tire - previous damage (cause)
  - maintenance,installation - improper, other maintenance personnel (cause)
  - landing gear,tire - overtemperature (cause)
  - landing gear,tire - exploded (cause)
  - hydraulic system,line - failure,partial
  - fluid,hydraulic - exhaustion
  - hydraulic system - disabled (cause)
  - emergency procedure - poor (cause)
- Forced landing, landing - flare/touchdown
- Other gear collapsed, landing - flare/touchdown
  - hydraulic system - no pressure (cause)
  - door,landing gear - movement restricted (cause)
  - gear extension - not possible
  - landing gear,main gear - overload
  - landing gear,nose gear - overload

## Analysis

AFTER DEPARTING MIAMI & CLIMBING THROUGH 10,900 FT THE #3 RIGHT MAIN LANDING GEAR TIRE EXPLODED CAUSING MASSIVE DAMAGE TO SYSTEMS A & B HYDRAULIC LINES WHICH RESULTED IN A LOSS OF A & B HYDRAULIC SYSTEMS. THE ACFT RETURNED TO MIAMI & THE CREW WAS UNABLE TO EXTEND THE RIGHT MAIN LANDING GEAR USING EMERGENCY MANUAL EXTENSION PROCEDURES. AFTER LANDING WITH THE RIGHT MAIN GEAR RETRACTED, THE LEFT MAIN & NOSE GEAR COLLAPSED & SEPARATED. MASSIVE PLY SEPARATIONS WERE FOUND IN THE #3 TIRE STARTING AT THE TOE BEAD, DOWN THE SIDEWALL & EXTENDING CIRCUMFERENTIALLY AROUND THE CROWN OF THE TIRE AT THE 10TH TO 13TH PLY LAYERS. INSP OF THE SITE WHERE THE SEPARATION MET THE BEAD BUNDLES REVEALED A LOCATION WHERE THE BEAD SEAT HAD BEEN SANDED & SMOOTHED. THE ABRASION HAD REMOVED THE OUTER CHAFER STRIP, SEVERAL COVER PLIES, & HAD EXPOSED THE PLIES COVERING THE TOE BEAD. THE BEAD SEAT, AS WELL AS THE CORDS WRAPPED AROUND THE TOE BEAD, HAD ALSO BEEN SUBJECTED TO EXCESSIVE HEAT FOR AN EXTENDED PERIOD OF TIME CAUSING SEVERE DETERIORATION OF THE BEAD SEAT AREA.

## Aircraft

- Registration: N812EA (not matched to a registry record)
- Reported make and model: BOEING 727-225A
- Category: Airplane
- Serial number: 22549
- Engines: P&W JT8D-15 15500 lbs thrust turbo fan
- Damage: Substantial damage
- Flight: Part 121
- Operator: Eastern Airlines
- Registered owner: Connecticut National Bank
- Airworthiness certificate: Standard, Transport
- Destination: ZDV, DENVER, CO
- Flight plan: IFR
- Airport: MIA, Miami Intl, runway 9R, 13,002 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 49; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--w/ waivers/lim; seat: left; flight hours: 9,011 total, 6,954 in this make and model, 191 in the last 90 days

## Weather

- Conditions: Visual (VMC), Night/bright
- Wind: 320° at 3 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Temperature: 66 °F, dew point 61 °F
- Altimeter: 29.00 inHg
- Observed at: MIA

## FAA reports on this event (1)

The FAA's own accident and incident reports, matched to the aircraft by N-number and date (OpenAirDocs).

- [Accident 19831111065139A](https://openairdocs.org/incident/19831111065139A), Nov 11, 1983: Boeing 727225, Miami, FL, Substantial damage. A main tire exploded in the wheel well damaging hydraulics on climb. Right main gear collapsed on return landing.

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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