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AS350 & 355 EAD 20/10/2020

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AS350 & 355 EAD 20/10/2020

Old 16th Oct 2020, 09:21
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AS350 & 355 EAD 20/10/2020

UK CAA published an EAD today 2020-0224-E at the instruction of EASA for tail rotor blades following 2 reports of de-bonding of leading edge protection shields.
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Old 16th Oct 2020, 11:33
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Shades of the Robinson blade AD, including the mechanism causing the debonding, daily inspections and tap tests.
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Old 16th Oct 2020, 15:47
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I really need to improve my walkround - I had entirely missed the leading-edge shields on the 44ís TR.
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Old 16th Oct 2020, 17:44
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@Hilico you can split semantic hairs if you like, but the referenced AS350 & 355 EAD is very, very similar to this Robinson AD. Debonding of a leading edge structure on a rotor blade requiring daily inspections, tap testing, and total replacement per a prescribed schedule. In the former case the tail rotor, in the latter case the main rotor. Having just gone through the replacement of the -5 MRBs on my 44 this past January (luckily I only got screwed out of 4 months of blade life--they were due in April anyway), this entire situation is still fresh in my mind, and I have the stack of AD-mandated daily check sheets to prove it, and some leftover leading edge paint, too.

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Old 16th Oct 2020, 18:14
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Point taken. Also, got to love the way the FAA phrase it vs EASAís verbalese.
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Old 17th Oct 2020, 13:04
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Hilico, was that meant to be tongue in cheek or did you get those the wrong way round? The EASA one seems very straightforward but the Robbie one is pages long.
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Old 17th Oct 2020, 14:08
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The FAA / Robinson doc is longer, but tells the story better - perhaps itís a style preference of mine.
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