# Boeing 747SP-21

- Type: Aircraft model (FAA registry)
- Registry code: 1384802
- Manufacturer (registry): BOEING
- Model: 747SP-21
- Aircraft type: Fixed wing multi engine
- Category: Airplane
- Engines: 4 · Turbo-jet
- Seats: 360
- Weight class: 20,000 lb and over
- Cruise speed: 432 mph
- Certification: Type certificated
- Registered aircraft: 1
- Page: https://openairdocs.org/model/boeing-747sp-21

Model codes come from the FAA registry's reference file. ADs are matched to them by model name and maker.

## ADs that may apply (OpenAirDocs)

Matched to this model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

None matched.

## Registered aircraft (1)

- [N7477S](https://openairdocs.org/aircraft/N7477S): [Csds Asset Management LLC](https://openairdocs.org/faa-owner/CSDS%20ASSET%20MANAGEMENT%20LLC), [Ralph Hills, CA](https://openairdocs.org/faa-place/CA/Ralph%20Hills), S/N 21648

## NTSB investigations (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 LAX89LA068](https://openairdocs.org/ntsb/LAX89LA068), Dec 23, 1988: Boeing 747SP-21 (N146UA), Midway Islands (Pacific Ocean), no damage. Probable cause: AIRCRAFT'S ENCOUNTER WITH UNFORECAST SEVERVE CLEAR TURBULENCE.
- [NTSB LAX87LA243](https://openairdocs.org/ntsb/LAX87LA243), Jun 23, 1987: Boeing 747SP (N141UA), Los Angeles, CA, substantial damage. Probable cause: FAILURE OF THE QUALIFIED MECHANIC TO INSURE THE OPERATION OF THE AIRCRAFT BRAKES PRIOR TO TAXIING AND HIS FAILURE TO UTILIZE THE EMERGENCY BRAKE SYSTEM TO PREVENT THE COLLISION. CONTRIBUTING TO THIS…

## FAA accident and incident reports (9)

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 19930414013219I](https://openairdocs.org/incident/19930414013219I), Apr 14, 1993: Boeing 747SP21 (N144UA), New York, NY, Minor damage. Bird strike on NR4 engine on climb out. Returned. Damaged nose cone inlet.
- [Incident 19920617026809I](https://openairdocs.org/incident/19920617026809I), Jun 17, 1992: Boeing 737300 (N146UA), Dallas-Ft Worth, TX. Co-pilot experienced chest pains and shortness of breath. Returned. Co-pilot removed to hospital.
- [Incident 19911004049219I](https://openairdocs.org/incident/19911004049219I), Oct 4, 1991: Boeing 747SP21 (N141UA), Honolulu, HI. Passenger had seizure en route. Given first aid while diverting to airport. Hospitalized but expired.
- [Incident 19890626041849I](https://openairdocs.org/incident/19890626041849I), Jun 26, 1989: Boeing 747SP21 (N149UA), Honolulu, HI. NR3 engine fire warning light on. Diverted to Honolulu. NR15 stage pneumatic coupling loose and near sensors.
- [Incident 19890408037659I](https://openairdocs.org/incident/19890408037659I), Apr 8, 1989: Boeing 747SP21 (N147UA), Sydney, AS, Minor damage. Firm landing with a crosswind. Landed with slight crab. Gear moved aft. Corrosion in right landing gear trunnion.
- [Incident 19881223056109I](https://openairdocs.org/incident/19881223056109I), Dec 23, 1988: Boeing 747SP21 (N146UA), Honolulu, HI. 2 Flight attendants sustained injuries when aircraft encountered turbulence. Received medical help after landing.
- [Incident 19870720046919I](https://openairdocs.org/incident/19870720046919I), Jul 20, 1987: Boeing 747SP21 (N149UA), Los Angeles, CA, Minor damage. Encountered severe nose wheel shimmy on landing, cause undetermined.
- [Accident 19870622055261A](https://openairdocs.org/incident/19870622055261A), Jun 22, 1987: Boeing 747SP21 (N141UA), Los Angeles, CA, Substantial damage. Mechanic taxiing 747 without brake hydraulic power struck a holding 737 N184AW. Had failed to use backup system.
- [Incident 19870319025359I](https://openairdocs.org/incident/19870319025359I), Mar 19, 1987: Boeing 747SP21 (N149UA), Chicago, IL. Second officer passed out en route. Aircraft diverted and ambulance transported crew member to the hospital.

## Service difficulty reports (2)

As reported by operators and repair stations, by the model named in the report.

- [SDR 2005FA0001197](https://openairdocs.org/sdr/2005FA0001197), Aug 5, 2005: ROD END. BROKEN. ON AUGUST 5TH, DURING THE FLIGHT CONTROL RIGGING OPERATION, THE LT AILERON IB PCU ROD END WAS FOUND BROKEN. THIS ROD END IS PART OF THE BENDIX PCU PN 317012-1 A
- [SDR 95UAL900161](https://openairdocs.org/sdr/95UAL900161), Sep 29, 1995: SPAR. CRACKED. DURING NR 2 ENGINE CHANGE, FOUND NR 2 LOWER HORIZONTAL SPAR WITH 6 INCH CRACK. CRACK WAS LOCATED BETWEEN NAC STA 210 AND 216, ADJACENT TO INBOARD CHORD. REPAIRE

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