MSB-E4-034 High Pressure Fuel Pump driving gear

Discussions specific to Austro engines

Moderators: Rick, Lance Murray

User avatar
Donkadillapig
3 Diamonds Member
3 Diamonds Member
Posts: 96
Joined: Tue Nov 10, 2020 5:09 pm
First Name: Steve
Aircraft Type: DA40NG
Aircraft Registration: N812LA
Airports: KFCI
Has thanked: 153 times
Been thanked: 80 times

Re: MSB-E4-034 High Pressure Fuel Pump driving gear

Post by Donkadillapig »

Thanks for the wise words Dan.... I'm headed to the hanger later and will do exactly that.
User avatar
VickersPilot
3 Diamonds Member
3 Diamonds Member
Posts: 181
Joined: Wed Oct 14, 2020 6:41 pm
First Name: Dave
Aircraft Type: DA62
Aircraft Registration: N00TBC
Airports:
Has thanked: 51 times
Been thanked: 80 times

Re: MSB-E4-034 High Pressure Fuel Pump driving gear

Post by VickersPilot »

I agree with Dan - if your arteries show up clear in the scan, don't do heart surgery just to check.
User avatar
ScottOHare
2 Diamonds Member
2 Diamonds Member
Posts: 45
Joined: Wed Sep 04, 2019 10:49 pm
First Name: Scott
Aircraft Type: OTHER
Aircraft Registration: Other
Airports: KDIJ
Has thanked: 18 times
Been thanked: 19 times

Re: MSB-E4-034 High Pressure Fuel Pump driving gear

Post by ScottOHare »

This is what you are looking for.
IMG_1126.jpeg
User avatar
Karl
4 Diamonds Member
4 Diamonds Member
Posts: 317
Joined: Wed Aug 04, 2010 3:58 am
First Name: Karl
Aircraft Type: DA40
Airports:
Has thanked: 68 times
Been thanked: 102 times

Re: MSB-E4-034 High Pressure Fuel Pump driving gear

Post by Karl »

ScottOHare wrote: Tue Nov 02, 2021 11:20 pm This is what you are looking for.IMG_1126.jpeg
That is correct for MSBE4 035, but MSBE4 034 requires you to check the serial numbers of your HP fuel pump irrespective of the cylinder head fitted.
User avatar
Donkadillapig
3 Diamonds Member
3 Diamonds Member
Posts: 96
Joined: Tue Nov 10, 2020 5:09 pm
First Name: Steve
Aircraft Type: DA40NG
Aircraft Registration: N812LA
Airports: KFCI
Has thanked: 153 times
Been thanked: 80 times

Re: MSB-E4-034 High Pressure Fuel Pump driving gear

Post by Donkadillapig »

Thanks all for the input... But that's exactly where it gets confusing.
We got the cowling off last night, I found and photographed the raised Mercedes Benz lettering on my cylinder head. Great! 035 complied with and in some theories I'm in good shape.
However..... on 034, my engine serial number was listed! So what then?? Does 035 supersede 034?
And where then does that put me with the AD?
User avatar
CFIDave
5 Diamonds Member
5 Diamonds Member
Posts: 2678
Joined: Wed Nov 07, 2012 3:40 pm
First Name: Dave
Aircraft Type: OTHER
Aircraft Registration: N333GX
Airports: KJYO Leesburg VA
Has thanked: 231 times
Been thanked: 1473 times

Re: MSB-E4-034 High Pressure Fuel Pump driving gear

Post by CFIDave »

Steve, you still have to have the HPP driving gear inspected per MSB 034 since your engine serial number was listed there.
Epic Aircraft E1000 GX
Former DA40XLS, DA42-VI, and DA62 owner
ATP, CFI, CFI-I, MEI
User avatar
Karl
4 Diamonds Member
4 Diamonds Member
Posts: 317
Joined: Wed Aug 04, 2010 3:58 am
First Name: Karl
Aircraft Type: DA40
Airports:
Has thanked: 68 times
Been thanked: 102 times

Re: MSB-E4-034 High Pressure Fuel Pump driving gear

Post by Karl »

CFIDave wrote: Wed Nov 03, 2021 1:53 pm Steve, you still have to have the HPP driving gear inspected per MSB 034 since your engine serial number was listed there.
Dave, I think the eng serial numbers are listed just because that is where Austro records show it as where a suspect pump/gear was fitted. The pump may have been removed since it left the factory.

It is the fuel pump serial numbers that are important.

The SB states that it affects all E4/E4P having an affected part installed.
The affected part is a gear/fuel pump combination as listed in the table.

So if your engine has a fuel pump with a serial number listed then you are required to carry out the SB.
User avatar
Karl
4 Diamonds Member
4 Diamonds Member
Posts: 317
Joined: Wed Aug 04, 2010 3:58 am
First Name: Karl
Aircraft Type: DA40
Airports:
Has thanked: 68 times
Been thanked: 102 times

Re: MSB-E4-034 High Pressure Fuel Pump driving gear

Post by Karl »

Donkadillapig wrote: Wed Nov 03, 2021 1:12 pm Thanks all for the input... But that's exactly where it gets confusing.
We got the cowling off last night, I found and photographed the raised Mercedes Benz lettering on my cylinder head. Great! 035 complied with and in some theories I'm in good shape.
However..... on 034, my engine serial number was listed! So what then?? Does 035 supersede 034?
And where then does that put me with the AD?
Didn't you already talk directly with Diamond about this when the SB was first issued and they told you that yours is OK?
User avatar
Boatguy
5 Diamonds Member
5 Diamonds Member
Posts: 1827
Joined: Mon Jan 22, 2018 4:48 am
First Name: Russ
Aircraft Type: DA62
Aircraft Registration: N962M
Airports: KSTS
Has thanked: 1327 times
Been thanked: 1163 times

Re: MSB-E4-034 High Pressure Fuel Pump driving gear

Post by Boatguy »

Karl wrote: Mon Nov 08, 2021 1:04 am So if your engine has a fuel pump with a serial number listed then you are required to carry out the SB.
Technically, MSBs are not an AD and not required.

However, this is a really serious problem for anyone with an Austro engine (which includes me). Karl is making the right point. An HPP failure in flight is total loss of thrust and if it distributes metal chips into the engine then you'll need an entirely new engine after you make your successful emergency dead stick landing. There is one of those at my service center now, waiting for a new engine from Austria.

If your engine or pump s/n is on the list, or there is any ambiguity, my suggestion is to not fly again, or fly no further than necessary, until you know you are in the clear, or know you need a new HPP or cylinder head, or both.

Nobody can be happy about this, but it's better than becoming a glider pilot on a moment's notice at a location not of your choosing.
User avatar
Karl
4 Diamonds Member
4 Diamonds Member
Posts: 317
Joined: Wed Aug 04, 2010 3:58 am
First Name: Karl
Aircraft Type: DA40
Airports:
Has thanked: 68 times
Been thanked: 102 times

Re: MSB-E4-034 High Pressure Fuel Pump driving gear

Post by Karl »

Boatguy wrote: Mon Nov 08, 2021 4:26 am
Karl wrote: Mon Nov 08, 2021 1:04 am So if your engine has a fuel pump with a serial number listed then you are required to carry out the SB.
Technically, MSBs are not an AD and not required.
Agreed, SB's are not legally mandatory, an AD is issued when the authorities think it should be.
FAA AD 2021-22-20 (there is an EASA AD too) relates to MSB-035 which includes the requirements of MSB-034 making both MSB's mandatory as far as I can tell.

The manufacturer calls it mandatory to draw your attention to a safety issue and so that they can deny liability if you choose to ignore it.
Also, I have spoken to 2 aviation loss adjusters who both stated that not complying with a manufacturer's mandatory requirement could result in a refused insurance claim. Insurance companies will use any excuse to avoid a payout. :)
Post Reply