# N28728: 1968 Boeing 707-331B, registration cancelled 1984-05-25

- Type: Cancelled registration (FAA registry, deregistered aircraft)
- Cancelled: May 25, 1984
- Status when cancelled: Sale reported
- Airframe: [Boeing 707-331B](https://openairdocs.org/model/boeing-707-331b) (registry code 138366H)
- Engine: [Pratt & Whitney JT3D-3&3B](https://openairdocs.org/engine/pratt-whitney-jt3d-3-3b) (registry code 52039)
- Data sheets: [TCDS 4A26](https://openairdocs.org/tcds/4A26) (OpenAirDocs)
- Serial number: 19573
- Year built: 1968
- Type of aircraft: Fixed wing multi engine
- Engine type: Turbo-fan
- Airworthiness: Standard
- Last registry action: May 30, 1984
- Mode S code: A2EABB
- Location: [Denver, CO](https://openairdocs.org/faa-place/CO/Denver)
- Owner type: Individual
- Owner's area on the map: 39.7338° N, 104.9165° W: Placed by OpenAirDocs at the center of ZIP code 80220, within about a mile (OpenAirDocs). The owner's mailing address, not where the aircraft was based
- The mark today: https://openairdocs.org/aircraft/N28728
- FAA registry: https://registry.faa.gov/AircraftInquiry/Search/NNumberResult?nNumberTxt=28728
- Page: https://openairdocs.org/deregistered/N28728-1984-05-25

From the FAA registry file of November 7, 2026, cancelled registrations. Owners' street addresses are left out. The Mode S code belongs to the N-number, not the airframe.

ADs and bulletins for the Boeing 707-331B: https://openairdocs.org/model/boeing-707-331b.md

## FAA accident and incident reports (2)

From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [Incident 19810518031479I](https://openairdocs.org/incident/19810518031479I), May 18, 1981: Boeing 707* (N28728), Chicago, IL. Ze compressor stall on number 4 engine during takeoff due to defective surge bleed valve part no 28705.
- [Incident 19800106011079I](https://openairdocs.org/incident/19800106011079I), Jan 6, 1980: Boeing 707/ (N28728), Bangor, ME. Uncontrollable cabin pressure. Outflow valve jammed open.

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