Aircraft Flight Manual — Section Abnormal Procedures — Amendment; Ice and Rain Protection / Pneumatic — MMEL Amendment; Pneumatic — Bleed Monitoring Computer Electrical Connection — Modification
- Published
- Effective
- Deadline
- Replaces
- 2022-0165
AI-generated summary of the official EASA document. Verify against the PDF before acting.
What to do
Operators must amend the applicable AFM with the specified Temporary Revision before the next flight after 16 August 2022 and implement the MMEL updates concurrently. The electrical connections of both Bleed Monitoring Computers must be modified within 750 flight hours or 4 months from 16 August 2022, using either the Airbus Alert Operators Transmission or the newly introduced Service Bulletin. After modification, the AFM and MMEL amendments can be removed. Compliance with these actions is mandatory unless previously accomplished.
Summary
EASA Airworthiness Directive 2022-0165R1 is an amendment addressing the electrical grounding issue in the Over-Heat Detection System (OHDS) on Airbus A320 and A321 aircraft, specifically models A320-251N, A320-253N, A321-251N, A321-253N, A320-271N, A321-271N, and A321-272N. This directive mandates modifications to the Bleed Monitoring Computer electrical connections, updates to the Aircraft Flight Manual (AFM) abnormal procedures, and amendments to the Master Minimum Equipment List (MMEL) to ensure continued safe operation. The directive applies to aircraft not incorporating Airbus modifications 161978 or 161979 in production.
What changed
This revision adds Airbus Service Bulletin A320-36-1088 as an optional method for modifying the Bleed Monitoring Computer electrical connections to restore OHDS leak detection capability. It also references Revision 1 of Airbus Alert Operators Transmission A36N008-22, which clarifies instructions and includes the new Service Bulletin. The amendment updates previous requirements by providing alternative compliance options and clarifying procedural references.
Why it matters
The directive addresses a critical safety issue where undetected hot air bleed leaks could compromise aircraft structural integrity or cause system malfunctions, including fire risks. For operators and maintenance organizations, compliance ensures the OHDS functions correctly, preventing hazardous conditions. The AFM and MMEL amendments provide interim operational procedures to mitigate risks before modification completion, supporting safe flight operations and regulatory compliance.
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