Thanks for the factual posting, Capt Buck. Also good to hear from P. Fuller ; we share memories of plane spotting at KORL Orlando Executive - (formerly Herndon )

(Written on 2021年 02月 24日)(Permalink)

Lost and unmentioned in all this lawyerly bloviating is clarity of who OWNS these aircraft. OWNED by United Airlines for 25 + years. The Japanese and other 777 owners for decades. Owners have an obligation to maintain properly, which includes oversight of maintenance & repairs. A better analogy is : your ill-maintained 26 year old Toyota has its rusted hood fly off, strikes and injures a pedestrian. The pedestrian has a course of action against YOU the owner of the ancient, out-of warranty rustbucket.

(Written on 2021年 02月 23日)(Permalink)

- This article is worth reading in its entirety. Says no happy talk about newer Boeing models until BA gets its house in order on 787 Dreamliners

(Written on 2021年 02月 23日)(Permalink)

Well, you're raising some good points. As a poster stated below, photos of the 2018 engine damage are almost indistinguishable from the recent incident. What else do they have in common ? Wait for it ... Complete loss of cowling. Among other things, discharge of a fire bottle becomes ineffective. Mostly like a "white fart into the wind" as I heard in a pilot's utube video There's speculation elsewhere about the materials of construction in a bulkhead. Possibly a newer composite material differs from an aluminum material used on the engines for certification in say 1993 or 1994.

(Written on 2021年 02月 23日)(Permalink)

I'm reminded a bit about a pre-covid congressional grilling of Facebook's Mark Zuckerberg. When a senator asked " Could you please give us your personal cell # and disclose the hotel address where you're staying ? Not surprisingly, he declined. I think the points have been made, that privacy does matter. A lot. Nuff said

(Written on 2021年 02月 23日)(Permalink)

You raise some good questions about inspection intervals and life. I really dont know about such impacts. There will be laser hot focus on NDT methods for this engine type, because of the similar 2018 blade loss incident with reg. N773UA . And big time focus on the complete loss of inlet ring and cowling. If you spend a lot of time around CYYZ, you probably won't need to duck for falling engine parts :) Air Canada's remaining 777-200 series are GE-90 powered. They have been parked since November 2020

(Written on 2021年 02月 23日)(Permalink)

Amid all the armchair experts on fuel dump, the checklist says - Do NOT dump fuel in the event of an engine fire. More simply : Nah, you don't want to light that Bar-B-Q

(Written on 2021年 02月 22日)(Permalink)

As mentioned by Chris B, and as reported elsewhere, the P&W models of concern are PW4000-112 with 112 inch blades. There are 7 sub-models of thrust rating. That said, many recent engine failures occurred with specific engine model PW 4077, 77,000 LBS thrust and basically the oldest units of the PW4000-112 series.

(Written on 2021年 02月 22日)(Permalink)

The article is helpful. It narrows the concern to the specific PW models under scrutiny, namely those with 112 inch diameter fan. Not sure whether the EAD will cover all submodels, which range from 77,000 LBS thrust to 98,000 LBS thrust. As stated elsewhere, concern is about the ones with hollow blades

(Written on 2021年 02月 22日)(Permalink)

Not an expert, but FWIW a mechanic speculated on another site, "the bypass duct was likely soaked in lube oil due to the failure of the bearing seals, and coated the acoustic composite liner with it - thats probably what you are seeing burning. The actual ignition of the fire could simply be the hot areas of the core."

(Written on 2021年 02月 21日)(Permalink)