# NTSB NYC84FA064: Canadair CL44D4, N104BB, East Boston, MA, January 2, 1984

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Field investigation · Final report
- Date: January 1, 1984, 19:48 local (Jan 2, 1984, 00:48 UTC)
- Place: East Boston, MA
- Location: 42.3629° N, 71.0064° W: Placed by OpenAirDocs at GENERAL EDWARD LAWRENCE LOGAN INTL (BOS), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.3629&lon=-71.0064&mi=10
- Phase of flight: [Landing](https://openairdocs.org/ntsb-phases/550) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 35310
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC84FA064
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35310/pdf
- Page: https://openairdocs.org/ntsb/NYC84FA064

## Sequence of events

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

- Main gear collapsed, landing - flare/touchdown
  - landing gear,normal retraction/extension assembly - inoperative (cause)
  - wheels up landing - performed, pilot in command (cause)
  - hydraulic system,line - failure,total (cause)
  - landing gear,emergency extension assembly - inoperative (cause)

## Analysis

THE ACFT LANDED WITH THE RIGHT MAIN LANDING GEAR IN THE RETRACTED POSITION. THE CREW WAS UNABLE TO LOWER THE RIGHT MAIN GEAR BY THE NORMAL OR EMERGENCY METHODS. INSPECTION AFTER THE ACCIDENT REVEALED THAT THE MAIN HYDRAULIC LINE. PN 44-75087-98 WAS BROKEN COMPLETELY AROUND ITS CIRCUMFERENCE UNDER THE 'B' NUT AT THE BULKHEAD FITTING WHERE THE LINE ENTERS THE H2 ENGINE NACELLE.

## Aircraft

- Registration: [N104BB](https://openairdocs.org/deregistered/N104BB-1999-07-28), registration cancelled 1999-07-28, S/N 24 (OpenAirDocs)
- Reported make and model: CANADAIR CL44D4
- Registry model: [Canadair CL-44D4](https://openairdocs.org/model/canadair-cl-44d4) (registry code 1900102) (OpenAirDocs)
- Category: Airplane
- Serial number: 24
- Airframe hours: 47039
- Engines: Rolls-Royce TYNE 515 5095 horsepower turbo prop
- Damage: Substantial damage
- Flight: Part 121
- Operator: Blue Bell, Inc.
- Registered owner: Aircraft Marketing, Inc.
- Airworthiness certificate: Standard, Transport
- Last inspection: AAIP, December 16, 1983, 120 hours before
- Departed: MJBQ, AGUADILLA, PR
- Destination: ORH, WORCESTER, MA
- Flight plan: IFR
- Airport: BOS, Logan Int'L, runway 4L, 7,860 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 47; 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: 13,173 total, 6,076 in this make and model

## Weather

- Conditions: Visual (VMC), Night/dark
- Wind: 20° at 9 knots
- Visibility: 12 statute miles
- Lowest ceiling: 2,700 ft overcast
- Temperature: 27 °F, dew point 12 °F
- Altimeter: 30.00 inHg
- Observed at: BOS

## 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 19840101001299A](https://openairdocs.org/incident/19840101001299A), Jan 1, 1984: Cndair CL44D4, East Boston, MA, Substantial damage. Hydraulic pressure line ruptured at the b nut. Leak emptied the resevoir. Landed with right main up. Ground looped.

## Other investigations on N104BB (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 ATL89IA219](https://openairdocs.org/ntsb/ATL89IA219), Sep 26, 1989: Canadair CL-44 (N104BB), Greensboro, NC, incident, no damage. Probable cause: THE FIRST OFFICER'S FAILURE TO FOLLOW APPROVED MISSED APPROACH PROCEDURES, AND HIS ATTEMPT TO TAKE THE FLIGHT CONTROLS FROM THE CAPTAIN WHO WAS FLYING THE AIRPLANE.

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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