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Brace for inspections: New AD clouds future of the Boeing 717

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The Federal Aviation Administration (FAA) has issued a new airworthiness directive (AD) for the Boeing 717 that will have a material impact on the operations of at least two US airlines. The AD was prompted by the investigation into a 2023 incident with a Delta Air Lines 717 that landed without nose landing gear, and requires repetitive inspections for cracking of the upper lock link assembly. The AD will impact nearly 100 Boeing 717s that are currently active with Delta and Hawaiian Airlines.… (www.msn.com) More...

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KicksOnRouteA66
Roger Anderson 7
So happy to have been able to flown one myself, but I think the nostalgia isn't a good enough reason to keep these birds around anymore. They are old and need a modern replacement.
EB333
Erik Bruner 5
These birds have stood the test of time.
They are known for short hop, high frequency Take off / land cycles.
Getting a NEW upper lock link that it point would be most difficult.
TimDyck
Tim Dyck 1
Why difficult? Boeing still makes them.
CitationJet
Kim Hackett 1
No they don’t.
TiredTom
Tom Bruce 1
nope...they don't
NeilPostlethwaiteItsAllBroken
Neil Postlethwaite 2
They could also get their designs out and make some more. Perhaps sub it out to a small supplier donut doesn’t distract.
TiredTom
Tom Bruce 2
not likely. be competing with A220 and the E195s which are much more modern
HarrySchluderberg
Harry Schluderberg 4
The DC9 series has served so well for decades and the wear and tear of airline operations are catching up with them.
It’s nearly time to say farewell to the trusty old birds.
joeblogs
joeblogs 3
No hull losses, can't say that about most planes new or old.
fek8
Fred Knight 2
Southern Airways Flight 242 (a DC-9 by any other name is still a DC-9).
ewrcap
ewrcap 1
Also CO, EA, Air Canada, NW, Air West, ONA, Value Jet and others but none that I can remember were caused by design or engineering faults.
oakwoodranch
Mark Henderson 3
70 thousand dollars is insignificant if it ends the required inspections
Obviously this was caused by a vendor problem
I flew the DC-9 series for over 20 years
The most reliable aircraft ever😎
TimDyck
Tim Dyck 4
The investigation showed that the cracks started at tool marks, as in hit with a hammer, on the lock link. Poor installation practices led to this.
pwpereira
Pete Pereira 1
Tool marks could also mean machining tool marks incurred during part fabrication.
stevenfelton
Steven Felton 2
I was in Finland in 2011 and Blue Airlines bought several of these aircraft brand new!
I flew on about 4 flights and enjoyed them and the new plane smell.
boughbw
boughbw 2
If it is this costly, I could imagine Delta pushing to come up with a more permanent solution. I am curious to see what is found. The delay in implementing the AD and stated likely prevalence and severity of the issue is contradictory. If it is this bad, why wait? To the contrary, the accident was two years ago and if the problem really is this prevalent and likely, why have there been no other incidents?
I am not suggesting this be ignored, but it may be simpler to address and more cost effective just by developing a higher-strength replacement.
The 717 is a great plane. Not sure why so many people are carping about it by citing non-unique, trivial issues. But after Delta has received a lot of A220s, there is likely a deeper reason why they keep the 717s.
myalias
myalias 5
The linked article mentioned it costing $20,000 to replace the part on top of the $50,000 inspection. It'll still be faster and cheaper to replace the part than to find new aircraft ready to fly today. Future inspections aren't required if the part is replaced and the replacement part should last the reamining life of the aircraft.

Delta has received all its A220-100 orders but is still waiting for 64 of its 100 A220-300. Deliveries are scheduled to be completed by the end of 2027. The A220 series has been suffering from engine availability, and the 717 can fill the gap for out of commission A220-100. That also lets Delta prioritize available engines for the -300.

It's going to take Pratt & Whitney two to three years to get caught up on the A220 engine backlog of repairs.

On the short 717 routes the planes spend less total time in the air so the fuel efficiency of the A220-100 replacement is less significant. Running the older plane still costs more, but less so than on longer routes. Dleta doesn't need to be in a hurry to stop flying the 717.

Put together, I bet Delta will replace the part on the 717s not too close to their next D checks and they'll likely fly them for a few more years.
NeilPostlethwaiteItsAllBroken
Neil Postlethwaite 1
Having only 1 engine choice for a plane is never a particularly great idea.

See 777X and GE9X related issues…
ewrcap
ewrcap 1
On the other hand, the very reliable DC-9/MD-80, 727, 737, and 95% of 707s and DC-8s came only with Pratt and Whitney engines and did fine. The same could be said of all the RR Speys which were exclusive on BAC 1-11, Trident, F28 and Gulfstreams.
TimDyck
Tim Dyck 2
True the 717 is a great plane and a safe one. And based on the story this might be a one off since the cracks started from tool marks, which indicates someone missed installing the pin and hit the Lock Link instead. In my opinion if they needed that much force then they were installing the pin wrong, I perfer pressing them in after properly lining them up.
But the 717s are getting old and will soon be phased out, maybe some will survive as private jets or cargo haulers but I suspect none will be in passenger service by the end of the decade.
TimDyck
Tim Dyck 1
It will be sad to seem them retired, great planes if you don’t mind their fast acceleration and how they seem to leap off the runway.
I’m not a pilot so maybe a pilot can answer this, was there a reason that they felt like they were more aggressive taking off than other aircraft in their size range? Or were they just piloted by X race car drivers who felt the need for speed?
TiredTom
Tom Bruce 2
made for shorter runways
TimDyck
Tim Dyck 1
Yes. Lake a Dash 8 on steroids. They always remind me of when so used to race cars, the whole zero to whatever speed they get to in 10 seconds thing.
TimDyck
Tim Dyck 0
I must have been half asleep when I posted that. Sorry about all the spelling errors. It was supposed to say…
Yes like a Dash 8 on steroids. They always remind me of when I used to race cars, the whole zero to whatever speed they get to in 10 seconds thing.
lrunger
LARRY UNGER 1
They are way overdue for retirement. Boeing should have left the MD series die when they took over MacDonald Douglas. These planes were no good in cold climates - always needed start carts. They were no good in hot climates - always needed auxiliary A/C. They were only meant to fly in a small band across the middle of the country.
elliot707
elliot epstein 3
Are you serious with a comment like that?
TimDyck
Tim Dyck 2
Hawaiian Airlines Uses them for island hopping they get a bit of hot weather there. There used to be a lot of them in Spain, again it gets warm there.
jrgargiulo
john Gargiulo 0
Delta keeps all of its airplanes too long
TimDyck
Tim Dyck 3
If they still do the job and are safe why get rid of them. I like riding in the 717s, they are usually comfortable and have a great safety record. No major crashes, no fatalities and this is the first AD for a mechanical issue I recall reading about and it’s because someone hit a link with a hammer years befor that link cracked.
pwpereira
Pete Pereira 1
"The fracture initiated along microscopic tool marks on the surface of the forged aluminum component, likely from manufacturing or maintenance operations years earlier."

A hammer typically doesn't create microscopic marks. If the microscopic marks left by manufacturing tooling can act as stress concentration points leading to failure then the part was not adequately designed. Hence the global coverage of the AD.

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