Airworthiness directives › 2026-07-07
AD 2026-07-07 Airworthiness Directives; Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Airplanes
Models named: BD-500-1A10, BD-500-1A11. Read the applicability below — it usually turns on serial or part numbers too.
Applicability*9
This AD applies to all Airbus Canada Limited Partnership (Type Certificate previously held by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.) Model BD-500-1A10 and BD-500-1A11 airplanes, certificated in any category.
Compliance
Comply with this AD within the compliance times specified, unless already done.
Required actions
(1) As of the effective date of this AD, no person may dispatch an airplane if crew alerting system (CAS) message “AUTO PRESS FAIL (CAUTION)” is displayed. (2) As of the effective date of this AD, no person may dispatch an airplane under the operational procedures of the operator's minimum equipment list (MEL) items corresponding with the following operational procedures of the Master Minimum Equipment List (MMEL) items listed in figure 1 to paragraph (g)(2) of this AD. Note 1 to paragraph (g)(2): There are two operational procedures (O) within MMEL items 21-33-03 and 21-33-04. For this AD, only dispatch under the operational procedures listed in figure 1 to paragraph (g)(2) of this AD is prohibited. Figure 1 to Paragraph (g)(2)—Prohibited MMEL Items 21. Air Conditioning Sequence No. Item Description 33-03 Landing Field Elevation (LFE) Indication (O) May be inoperative provided: (a) Pressurization is operated in manual control mode, (b) Autopilot is operative, (c) Minimum enroute altitude does not exceed 10,000 ft. above MSL, and (d) Operations are restricted to airports at or below 8,000 ft. Landing Field Elevation (LFE). 33-04 Landing Field Elevation (LFE) Automatic Selection (O) May be inoperative provided: (a) Pressurization is conducted in manual mode, (b) Autopilot is operative, and (c) Operations are restricted to airports at or below 8,000 ft. Landing Field Elevation (LFE).
Unsafe condition
This AD was prompted by the discovery during production flight tests that the outflow valve (OFV) direct current (DC) motor could potentially be inoperative when used in high differential pressure conditions. The FAA is issuing this AD to address loss of OFV control in cabin pressure control system (CPCS) manual (MAN) mode, which if not corrected, could potentially lead to total loss of cabin pressure control, excessive differential pressure across the airplane structure, inability to rapidly depressurize the airplane to ambient, when needed, and inability to evacuate smoke, when needed.
Affected ADs
None.
Read the original on the Federal Register →
You just looked this one up by hand
TrackAD holds all 12,278 of them and matches them against the aircraft you actually look after — airframe, engine, propeller and appliances in one pass — then works out what falls due and when.
- Bring your existing list in from a spreadsheet Paste the rows straight out of Excel. Headers like C/W Date and N/A are read for you.
- A copy that works when this does not One file. No internet, no login, no this software running. For the morning something has to be produced and the computer is not cooperating.
- $5 a month, or $50 a year Up to 50 aircraft on either.
Look round a real shop first Start free
The demonstration shop is eleven real aircraft with a year of work behind them. No account needed.
The directive text above is reproduced from the Federal Register, a work of the United States government and in the public domain. The separation into applicability, compliance and required actions is TrackAD's.*1