- Date
- July 18, 2017
- Place
- Frankfurt, Germany
- Damage
- No damage
- Phase of flight
- Enroute
- Aircraft
- N121UABoeing 747 422
- Defining event
- Enroute: Pressure/environ sys malf/fail
- NTSB office
- Major Investigations Division
- Lead agency
- Other
- Case key
- 95663
From the NTSB’s public API. By law, NTSB reports can’t be used as evidence in lawsuits over the incident.
On this page
Sequence of events
The events NTSB coded, in order, by phase of flight. The defining event is the one that best describes the accident. Under each, the cases with the same event anywhere in their sequence.
Factual narrative
The BFU of Germany has notified the NTSB of an incident involving a Boeing 747 airplane that occurred on July 18, 2017. The NTSB has appointed a U.S. Accredited Representative to assist the BFU's investigation under the provisions of ICAO Annex 13 as the State of Manufacturer and Design of the airplane.All investigative information will be released by the BFU of Germany.
Aircraft
- Registration
- N121UA
- Reported as
- Boeing 747 422 (422)
- Category
- Airplane
- Serial number
- 29167
- Engines
- Damage
- No damage
- Operator
- United Airlines
- Registered owner
- United Airlines Inc
Matched to the registry by N-number and the event date; the registry’s history has gaps, so older matches can be wrong. Compare the reported make and model.