# NTSB ATL89IA219: Canadair CL-44, N104BB, Greensboro, NC, September 26, 1989

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: September 26, 1989, 06:15 local (10:15 UTC)
- Place: Greensboro, NC
- Location: 36.1013° N, 79.9411° W: Placed by OpenAirDocs at PIEDMONT TRIAD INTL (GSO), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=36.1013&lon=-79.9411&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 3 uninjured
- Status: Completed, report August 26, 1992
- Report: Approved by Office Director
- NTSB case key (mKey): 7932
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=ATL89IA219
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/7932/pdf
- Page: https://openairdocs.org/ntsb/ATL89IA219

## 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.

## Sequence of events

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

- Loss of control - in flight, missed approach (ifr)
  - control interference - intentional, copilot/second pilot (cause)
  - relinquishing of control - disregarded, copilot/second pilot (cause)

## Analysis

WHILE ATTEMPTING AN INSTRUMENT APPROACH TO GREENSBORO, NC, THE FIRST OFFICER REFUSED TO FOLLOW MISSED APPROACH INSTRUCTIONS AND TOOK THE FLIGHT CONTROLS FROM THE CAPTAIN. AFTER A STRUGGLE, THE CAPTAIN AND FLIGHT ENGINEER REGAINED CONTROL OF THE AIRPLANE. DURING THE STRUGGLE, THE AIRPLANE CAME WITHIN 30 FEET OF COLLIDING WITH A PASSENGER TERMINAL AND PARKED AIRPLANES. THE FIRST OFFICER'S MENTAL STATE WAS SUCH THAT HE BELIEVED THAT HIS ACTIONS WERE IN ACCORDANCE WITH COMPANY POLICIES.

## 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 CL-44
- Registry model: [Canadair CL-44D4](https://openairdocs.org/model/canadair-cl-44d4) (registry code 1900102) (OpenAirDocs)
- Category: Airplane
- Serial number: 24
- Airframe hours: 57511
- Engines: Rolls-Royce MK-515 5305 horsepower turbo prop
- Damage: No damage
- Flight: Part 121
- Operator: Aircraft Marketing Inc.,, doing business as Wrangler Aviation
- Registered owner: Aircraft Marketing, Inc
- Airworthiness certificate: Standard, Transport
- Last inspection: Continuous airworthiness, August 13, 1989, 262 hours before
- Departed: AQUADILLA, PR
- Destination: KNOXVILLE, TN
- Flight plan: IFR
- Airport: GSO, Greensboro, runway 5, 10,000 × 150 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 37; airline transport; airplane ratings: multi-engine land, single-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; seat: left; flight hours: 6,800 total, 6,000 in this make and model, 1,550 as pilot in command, 235 in the last 90 days, 66 in the last 30 days, 5 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Night/dark
- Wind: 40° at 4 knots
- Visibility: 2 statute miles
- Lowest ceiling: 400 ft overcast
- Temperature: 57 °F, dew point 55 °F
- Altimeter: 29.00 inHg
- Observed at: GSO

## 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 19890926060329I](https://openairdocs.org/incident/19890926060329I), Sep 26, 1989: Cndair CL44D4, Greensboro, NC. Engine out on approach. Captain ordered go around. SIC attempted to land. Near a stall over terminal PIC got control

## 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 NYC84FA064](https://openairdocs.org/ntsb/NYC84FA064), Jan 2, 1984: Canadair CL44D4 (N104BB), East Boston, MA, substantial damage

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.

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.