# NTSB DCA86RA027: Boeing 747SP-21, N531PA, Sydny, Australia, May 23, 1986

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Foreign investigation
- Date: May 23, 1986, 11:45 local (16:45 UTC)
- Place: Sydny, Australia
- Highest injury: No injuries
- Injuries: 108 uninjured
- Status: Led by another country's authority
- NTSB office: Major Investigations Division
- NTSB case key (mKey): 15863
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=DCA86RA027
- NTSB report (PDF, downloads): https://data.ntsb.gov/carol-repgen/api/Aviation/ReportMain/GenerateNewestReport/15863/pdf
- Page: https://openairdocs.org/ntsb/DCA86RA027

## Aircraft

- Registration: N531PA (not matched to a registry record)
- Reported make and model: BOEING 747SP-21
- Flight: Part 121
- Operator: United Airlines
- Registered owner: Bankers Trust Co Trustee

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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