# NTSB MIA85IA015: MBB BO-105, N29144, Orlando, FL, October 22, 1984

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: October 22, 1984, 17:15 local (21:15 UTC)
- Place: Orlando, FL
- Coordinates: 28.499502, -81.370422 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=28.4995&lon=-81.3704&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 4 uninjured
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 31273
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=MIA85IA015
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/31273/pdf
- Page: https://openairdocs.org/ntsb/MIA85IA015

## Sequence of events

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

- Loss of control - in flight, approach - vfr pattern - final approach
  - rotorcraft flight control,collective control - foreign object (cause)
  - planning/decision - improper, pilot in command (cause)
  - control interference (cause)
- Hard landing, descent - emergency

## Analysis

THE PURPOSE OF THE FLT WAS TO TRANSPORT A 76 YR OLD PATIENT, WHO WAS IN CRITICAL CONDITION. THE FLT WAS NORMAL UNTIL IT WAS ON FINAL APCH TO A 7TH FLOOR, ROOFTOP, HOSPITAL HELIPORT. DURING THE APCH, THE PLT ATTEMPTED TO INCREASE THE COLLECTIVE TO SLOW THE RATE OF DESCENT. HOWEVER, THE COLLECTIVE CONTROL WOULD NOT RAISE. THE PLT WAS ABLE TO KEEP THE HELICOPTER FROM HITTING THE SIDE OF THE BUILDING, BUT SUBSEQUENTLY LANDED HARD ON A LOWER ROOFTOP AT THE 2ND FLOOR LEVEL. THERE WAS MINOR DAMAGE TO THE SKID CROSSTUBES, TAIL ROTOR, TAIL BOOM, LEFT HORIZONTAL STABILIZER FIN & AN ANTENNA. AFTER THE INCIDENT, THE PLT NOTED THAT A HAND HELD TYPE RADIO HAD LODGED BEHIND THE COLLECTIVE PITCH CONTROL.

## Aircraft

- Registration: N29144 (not matched to a registry record)
- Reported make and model: MBB BO-105
- Category: Helicopter
- Serial number: 609
- Airframe hours: 3515
- Engines: Allison 250-C20B 420 horsepower turbo shaft
- Damage: Minor damage
- Flight: Part 135
- Registered owner: Delford Smith
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, August 31, 1984, 42 hours before
- Departed: N/A, LEESBURG, FL
- Destination: N/A, ORLANDO, FL
- Flight plan: Company VFR
- Airport: N/A, Orlando Heliport

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 35; commercial, airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: helicopter, airplane; medical: class 2, valid medical--no waivers/lim.; seat: right; flight hours: 4,563 total, 51 in this make and model, 4,313 as pilot in command, 45 in the last 90 days, 2 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Wind: 110° at 7 knots
- Visibility: 7 statute miles
- Lowest ceiling: none
- Altimeter: 30.00 inHg
- Observed at: ORL, 7 nm away

## 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 19841022074909I](https://openairdocs.org/incident/19841022074909I), Oct 22, 1984: Bolkms BO105S, Orlando, FL, Minor damage. Collective could not be raised for landing. Landed on lower floor. Portable radio found restricting collective.

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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