11 May 202412:36 reconstruction1K views

"UNRELIABLE” Speed and altitude Indication…Boeing 767

The Incident Record

The available The recording identifies this case as a Boeing 767 event involving unreliable speed and altitude indications. The video was published on May 11, 2024 and uses ATC audio. The source record available does not provide an aircraft registration, flight number, date of occurrence or a complete operational sequence.

What Unreliable Indications Mean

Unreliable airspeed or altitude information is a serious flight-deck problem because the crew may no longer be able to trust one or more of the basic parameters normally used to control and navigate the aircraft. The problem can arise from faults or obstructions affecting pitot and static systems, air-data computers or associated sensors. It can also produce indications that look plausible while being wrong.

Why the Problem Is Difficult

A crew dealing with unreliable indications has to distinguish faulty information from trustworthy references while continuing to control the aircraft. Standard procedures generally emphasize stabilizing the flight path first, using known pitch-and-thrust references as applicable, and then identifying the affected air-data source. The exact procedure depends on the aircraft type and operator's approved manuals.

What Can Be Confirmed Here

The title and supplied video identify a Boeing 767 and specifically describe unreliable speed and altitude indications. The ATC recording is useful evidence of what was communicated during the event, but the available source material does not establish enough incident-specific facts to reconstruct the aircraft's exact route, altitude changes, technical fault or final outcome without speculation.

A Broader Safety Lesson

Official investigation material from other air-data events shows why unreliable speed and altitude indications require disciplined instrument cross-checking and adherence to the aircraft's abnormal checklist. For example, the Transportation Safety Board of Canada has documented Boeing 767 events in which crews experienced conflicting or unreliable indications and used the applicable airspeed-unreliable procedure. Those cases demonstrate the general hazard, but they are not substituted for the incident.

Accident Facts

Date: May 11, 2024
Aircraft: B767

Timeline

Step 1

The available video identifies a Boeing 767 experiencing unreliable speed and altitude indications.

Step 2

The crew communicates the abnormal indication problem over ATC.

Step 3

The flight crew manages the aircraft while dealing with unreliable flight information.

Step 4

The available source record does not establish the exact technical failure or route.

Step 5

The available source record does not provide a verified final investigative finding for this specific video.

Sources

https://www.youtube.com/watch?v=Z0ZrCcRpbwI

https://www.tsb.gc.ca/eng/rapports-reports/aviation/2009/a09o0117/a09o0117.html

Audio from the original air traffic control recording, sourced from public recordings and released investigation records. The reconstruction, animation and written account are our own.