# NTSB NYC84FA143: Piper PA-28R-200, N4467X, Concord, MA, April 19, 1984

- Type: NTSB accident investigation
- Classification: Accident · Fatal · Field investigation · Final report
- Date: April 18, 1984, 22:39 local (Apr 19, 1984, 03:39 UTC)
- Place: Concord, MA
- Location: 42.4654° N, 71.3475° W: Placed by OpenAirDocs from NTSB’s distance and direction from LAURENCE G HANSCOM FLD (BED), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=42.4654&lon=-71.3475&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: Fatal
- Injuries: 1 fatal
- Status: Completed
- Report: Approved by Office Director
- NTSB case key (mKey): 35334
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=NYC84FA143
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/35334/pdf
- Page: https://openairdocs.org/ntsb/NYC84FA143

## Sequence of events

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

- Abrupt maneuver, approach - iaf to faf/outer marker (ifr)
  - proper descent rate - exceeded, pilot in command (cause)
  - descent - inadvertent, pilot in command (cause)
  - lack of recent experience in type of aircraft, pilot in command (cause)
  - remedial action - attempted, pilot in command (cause)
  - spatial disorientation, pilot in command (cause)
- Loss of control - in flight, approach - faf/outer marker to threshold (ifr)
  - weather condition - low ceiling (contributing factor)
  - weather condition - fog (contributing factor)
  - light condition - dark night (contributing factor)
- In flight collision with object, descent - uncontrolled
  - object - residence (contributing factor)
  - object - tree(s) (contributing factor)
  - light condition - dark night (contributing factor)

## Analysis

THE ACFT CRASHED INTO A HOUSE WHILE ON AN ILS APPROACH TO RWY 11 AT HANSCOM FIELD. SHORTLY BEFORE THE ACFT HAD REACHED THE OUTER MARKER (AND AFTER THE HAND OFF FROM BOSTON APPROACH CONTROL TO HANSCOM TOWER) AN ALTITUDE ALERT ON N4467X WAS RECEIVED BY THE BOSTON APPROACH RADAR CONTROLLER. HE NOTIFIED THE HANSCOM CONTROLLER WHO THEN INFORMED THE PLT OF THE ALERT, TO WHICH THE PLT REPLIED HE WAS AT 1400 FT AND CROSSING THE OUTER MARKER. THIS WAS THE THIRD INSTANCE DURING THE FLT WHERE A DISCREPANCY BETWEEN THE BAROMETRIC ALTIMETER AND THE ENCODING ALTIMETER CAME TO LIGHT. INVESTIGATION ALSO REVEALED THAT THE ACCIDENT OCCURRED AT THE END OF AN 18 HR WORK DAY FOR THE PLT WHO HAD ALSO BEEN ILL WITH THE FLU DURING THE WEEKEND PRECEEDING THE ACCIDENT.

## Aircraft

- Registration: N4467X (not matched to a registry record)
- Reported make and model: PIPER PA-28R-200
- Category: Airplane
- Serial number: 28-7625052
- Airframe hours: 3944
- Engines: LYCOMING IO-360-C1C 200 horsepower reciprocating
- Damage: Destroyed
- Flight: Business, Part 91
- Operator: Haski Aviation
- Airworthiness certificate: Standard, Normal
- Last inspection: Annual, March 20, 1984, 28 hours before
- Departed: 8G7, ZELIENOPLE, PA
- Destination: BED, BEDFORD, MA
- Flight plan: IFR
- Airport: BED, Hanscom Field, runway 11, 7,001 × 150 ft, concrete

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 43; private; airplane ratings: single-engine land; instrument ratings: airplane; medical: class 3, valid medical--w/ waivers/lim; seat: left; toxicology performed; flight hours: 435 total, 78 in this make and model, 269 as pilot in command, 57 in the last 90 days, 25 in the last 30 days, 4 in the last 24 hours

## Weather

- Conditions: Instrument (IMC), Night/dark
- Wind: 50° at 7 knots
- Visibility: 1 statute miles
- Lowest ceiling: 600 ft overcast
- Altimeter: 29.00 inHg
- Observed at: BED, 3 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).

- [Accident 19840418016959A](https://openairdocs.org/incident/19840418016959A), Apr 18, 1984: Piper PA28R200, Concord, MA, Destroyed. Became too low on ILS approach. Struck a house and trees prior to ground impact. Was advised of low altitude alert.

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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