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Global Regulatory Update, May 9-15, 2021

May 07, 2021
The Civil Aviation Authority of New Zealand has issued continuing airworthiness notice 14-003 on MS21042L3 nuts appearing to lose their self-locking function during installation, recommending that where new MS21042 self-locking nuts are used, engineers should consider applying at least one re-torque cycle on initial installation to confirm the retention of self-locking properties.
EASA has issued emergency airworthiness directive 2021-0120-E for ATR42-500s and ATR72-212As, requiring tests and amending aircraft flight manual master minimum equipment for cockpit display systems, effective May 5, 2021.

EASA has issued proposed airworthiness directive 21-063 for Airbus A330s and A340s, requiring inspection of elevators, effective 14 days after airworthiness directive is issued.
EASA has issued proposed airworthiness directive 21-064 for Safran pilot and co-pilot seat longitudinal locking system pins, requiring measurement and adjustment, effective 14 days after airworthiness directive is issued.

EASA has issued proposed airworthiness directive 21-065 for Boeing 737-700s and -800s, 747-400s and -8s, 767-400ERs and 777-200s, requiring replacement of Lufthansa Technik low-pressure oxygen flexible hoses, 14 days after airworthiness directive is issued.
EASA has issued proposed airworthiness directive 21-066 for Airbus A330s and A340s, requiring modification of trimmable horizontal stabilizer actuator’s electric load sensing device, effective 14 days after airworthiness directive is issued.

EASA has issued airworthiness directive 2019-0236R2 for ATR72 101s, 102s, 201s, 202s, 211s, 212s and 212As, requiring inspection of Main Landing Gear Bush, effective May 14, 2021.
FAA has issued airworthiness directive 2021-10-06 for certain CFM LEAP-1Bs, requiring for engine maintenance messages related to the pressure transducer and, depending on the results of the check, replacement of pressure sub-system unit before further flight, and repetitive checks for faults prior to each flight until the unit has accumulated at least 15 hr. of electrical power. For an engine not in service, this directive requires applying electrical power to the unit before further flight, effective May 10, 2021.
FAA has issued airworthiness directive 2021-09-06 for all Boeing 737-600s, -700s, -700Cs, -800s, -900s and -900ERs, requiring repetitive inspections for cracking of the left- and right-hand side outboard chords of frame fittings and failsafe straps at a certain station around eight fasteners, and repair if any cracking is found, effective June 8, 2021.
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A listing of airworthiness directives and bulletins from around the world.

Related Content

Global Regulatory Update, April 25-May 1, 2021
Global Regulatory Update, April 18-24, 2021
Global Regulatory Update, April 11-17, 2021
Global Regulatory Update, April 4-10, 2021

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