# NTSB CHI86FA096: Boeing 747-122, N4729U, Honolulu, HI, March 4, 1986

- Type: NTSB accident investigation
- Classification: Accident · Serious injuries · Field investigation · Final report
- Date: March 3, 1986, 19:06 local (Mar 4, 1986, 05:06 UTC)
- Place: Honolulu, HI
- Coordinates: 21.329319, -157.939071 (estimated)
- Nearby events: https://openairdocs.org/map.md?lat=21.3293&lon=-157.9391&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: Serious injuries
- Injuries: 2 serious, 7 minor, 331 uninjured
- Status: Completed, report January 25, 1988
- Report: Approved by Office Director
- NTSB case key (mKey): 13245
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=CHI86FA096
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/13245/pdf
- Page: https://openairdocs.org/ntsb/CHI86FA096

## Sequence of events

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

- In flight encounter with weather, cruise - normal
  - weather condition - turbulence,clear air (cause)
- Altitude deviation,uncontrolled, cruise - normal

## Analysis

THE SCHEDULED PASSENGER FLIGHT FROM HONOLULU TO CHICAGO ENCOUNTERED CLEAR AIR TURBULENCE (CAT) ABOUT 500 NM EAST OF HONOLULU WHILE IN CRUISE FLIGHT AT FLIGHT LEVEL 330. THE TURBULENCE WAS UNEXPECTED, HAD NOT BEEN FORECAST, AND THE FASTEN SEAT BELT WAS NOT ILLUMINATED. TWO PASSENGERS WERE SERIOUSLY INJURED DURING THE TURBULENCE ENCOUNTER. THE FLIGHT THEN CONTINUED TO THE DESTINATION AIRPORT WITHOUT FURTHER INCIDENT.

## Aircraft

- Registration: [N4729U](https://openairdocs.org/deregistered/N4729U-1998-05-29), registration cancelled 1998-05-29, S/N 19926 (OpenAirDocs)
- Reported make and model: BOEING 747-122
- Registry model: [Boeing 747-122](https://openairdocs.org/model/boeing-747-122) (registry code 1384872) (OpenAirDocs)
- Category: Airplane
- Serial number: 19926
- Engines: P&W JT9D turbo fan
- Damage: No damage
- Flight: Part 121
- Operator: United Airlines
- Registered owner: Connecticut National Bank
- Airworthiness certificate: Standard, Transport
- Departed: HNL, HONOLULU, HI
- Destination: ORD, CHICAGO, IL
- Flight plan: IFR

## Flight crew

As NTSB recorded them. NTSB leaves out names.

- Pilot; age 57; airline transport; airplane ratings: multi-engine land; instrument ratings: airplane; medical: class 1, unknown; seat: left; flight hours: 19,086 total, 323 in this make and model, 9 in the last 24 hours

## Weather

- Conditions: Visual (VMC), Night/bright
- Wind: 270° at 13 knots
- Visibility: 15 statute miles
- Lowest ceiling: none

## 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 19860303005309A](https://openairdocs.org/incident/19860303005309A), Mar 3, 1986: Boeing 747122, Honolulu, HI. Encountered cat at FL330 500 miles east of Honolulu. Passengers and attendents were injured . Continued destination

## Other investigations on N4729U (2)

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 BFO93WA148](https://openairdocs.org/ntsb/BFO93WA148), Aug 27, 1993: Boeing 747-100 (N4729U), Milan, Italy, incident, no damage
- [NTSB LAX92WA091](https://openairdocs.org/ntsb/LAX92WA091), Jan 9, 1992: Boeing 747-100 (N4729U), Narita, Japan, no 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.

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