# NTSB DEN82IA049: Gulfstream G159-C, N857H, Denver, CO, March 25, 1982

- Type: NTSB incident investigation
- Classification: Incident · No injuries · Incident investigation · Final report
- Date: March 25, 1982, 08:30 local (15:30 UTC)
- Place: Denver, CO
- Location: 39.8617° N, 104.6732° W: Placed by OpenAirDocs at DENVER INTL (DEN), within about a mile (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=39.8617&lon=-104.6732&mi=10
- Phase of flight: [Approach](https://openairdocs.org/ntsb-phases/500) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 20 uninjured
- Status: Completed, report March 25, 1983
- Report: Approved by Office Director
- NTSB case key (mKey): 70455
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DEN82IA049
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/70455/pdf
- Page: https://openairdocs.org/ntsb/DEN82IA049

## Sequence of events

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

- Miscellaneous/other, approach - vfr pattern - base leg/base to final
  - incapacitation, copilot/second pilot (cause)

## Analysis

ON FINAL APPROACH AFTER A NORMAL FLIGHT, THE COPILOT BECAME INCAPACITATED WHILE READING THE FINAL APPROACH CHECKLIST. THE CAPTAIN CONTINUED THE APPROACH AND MADE AN UNEVENTFUL LANDING. AFTER THE PASSENGERS HAD DEPLANED, THE COPILOT SUFFERED A SEIZURE WHILE HE WAS BEING HELPED DOWN THE STEPS BY THE CAPTAIN AND THE FLIGHT ATTENDANT. HE WAS TRANSPORTED TO THE HOSPITAL WHERE TESTS DETERMINED THAT HE HAD A CALCIUM DEPOSIT BEHIND THE RIGHT EAR THAT WAS APPLYING PRESSURE TO THE BRAIN. A CHEMOTHERAPY PROGRAM EVENTUALLY RESOLVED THE PROBLEM. THE COPILOT HAD RECEIVED HIS LAST CLASS I MEDICAL EXAMINATION TWO MONTHS PRIOR TO THE INCIDENT.

## Aircraft

- Registration: N857H (not matched to a registry record)
- Reported make and model: GULFSTREAM G159-C
- Category: Airplane
- Serial number: 88
- Engines: ROLLS ROYCE DAR 529-AZ 2000 horsepower turbo prop
- Damage: No damage
- Flight: Part 121
- Operator: U.S. Aviation
- Registered owner: U.S. Aviation
- Departed: SHR, SHERIDAN, WY
- Destination: COLLEGE PARK, MD
- Flight plan: IFR
- Airport: DEN, Stapleton Int'L. Airport, runway 26, 10,500 × 150 ft, asphalt

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 33; airline transport; airplane ratings: single-engine land, multi-engine land; instrument ratings: airplane; medical: class 1, valid medical--no waivers/lim.; flight hours: 6,500 total, 800 in this make and model, 250 in the last 90 days, 5 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Day
- Observed at: DEN

## 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 19820325070429I](https://openairdocs.org/incident/19820325070429I), Mar 25, 1982: Gulstm G159, Denver, CO. Copilot became ill while calling checklist on final. Hospitalized. Pressure on the brain due calcium deposit.

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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