FAA approves Airbus pitot tube replacement; hard questions not being asked

Posted on 06. Aug, 2009 by in Featured

The FAA has approved Aero Instrument’s 0851HL-AI pitot probe to replace the Thales system on airbus aircraft. This is a side issue, the fact that the replacement is only a recommendation seems to verify that. The hard questions are not being asked about the Airbus 330.

Why did AF 447 crash?

Since AF 447 went down here have been three similar events with airspeed failures on Airbus aircraft and two severe turbulence events (on other types of aircraft), all landed safely.

If the pitot systems led to the loss of AF 447 why hasn’t every aircraft that currently has a Thales pitot tube been grounded?

Thales claims their system meets all European Aviation Safety Agency (EASA) requirements.

Airbus claims the AF 447 A-330 hit the water intact. The question of why there was a 50 mile debris field with the tail assembly at the beginning still has not been answered. Especially in light of the failure of past airbus empennages. Even if the aircraft crashed intact, it means the crew lost control or had it taken away from them.

According to the Australian Transportation Safety Board (ATSB); Qantas flight 72 experienced two loss of control events, due to the Air Data Inertial Reference Unit #1(ADIRU), receiving faulty information from the Angle of Attack (AOA) system. Not the pitot tube system. Why has there not been a “recommended” recall of the AOA system? This bad information caused the ADIRU #1 to violently pitch the aircraft nose down. The crew initially could not regain control and could not de-select the number 1 ADIRU. Two directives were released detailing procedures on how to secure the ADIRU #1. The second EASA directive came after the first’s procedures failed to shut down ADIRU #1 on a subsequent Qantas event.

The single point of failure, the common denominator, seems to be the ADIRU #1.

No Responses to “FAA approves Airbus pitot tube replacement; hard questions not being asked”

  1. Rick 7 August 2009 at 16:12 #

    This article just published today. Thought you’d be interested.


Leave a Reply