Rotax Electric pump failures

Engine, oil tank, fuel pump and other parts on front of the airplane.
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escalantea
Posts: 17
Joined: Sat Nov 23, 2019 9:51 pm
Location: South Florida

Rotax Electric pump failures

Post by escalantea »

Guys, I'm planning on building a TSi soon, In the mean time, I have been flying a VANS RV-12iS I recently completed, that uses a Rotax 912iS engine (similar to the 915iS but not Turbo).
Unfortunately, in less than 15 hours flight time I have had the electric pumps fail (as of yesterday) 4 times! This after I replace the original pumps due to a Rotas mandatory SB. (so a total of 5x replacements)
Lockwood Aviation has verified the failures and replaced the pumps (at no cost), but so far I have not received a root cause analysis on the failures.

Since the TSi uses the SAME electric pumps, I'm getting concerned with this.
Has anyone had any issues with the electric fuel pumps?

Suggestions? Alternatives? How can I escalate this to Rotax?
Best regards
A
StingerEquip
Posts: 16
Joined: Sun Nov 24, 2019 10:13 am
Location: Louisville, KY

Re: Rotax Electric pump failures

Post by StingerEquip »

Please do share the results!

Is it from contamination leading to mechanical failure of the pump or was it an electrical failure of the motor or something else? Sounds isolated.
escalantea
Posts: 17
Joined: Sat Nov 23, 2019 9:51 pm
Location: South Florida

Re: Rotax Electric pump failures

Post by escalantea »

Fuel is clean, Electric is fine. Filters are clean and filtering.
Not isolated, new pumps have failed 5 times in less than 15 hours engine time.
So far no Root Cause Analysis from Lockwood Aviation, the South Florida Rotax Service center.

I will post once more information becomes available.
huzilulu
Posts: 20
Joined: Sat Dec 14, 2019 9:12 am
Location: Houston TX

Re: Rotax Electric pump failures

Post by huzilulu »

I had 3 pumps fail on a car build I was doing - turns out there was a pinching of fuel lines and fuel starvation to the pump that burnt them out ...
MTJ
Posts: 56
Joined: Mon Dec 09, 2019 7:53 am
Location: 1L9

Re: Rotax Electric pump failures

Post by MTJ »

escalantea wrote: Sun Dec 20, 2020 2:56 pm
Not isolated, new pumps have failed 5 times in less than 15 hours engine time.
So far no Root Cause Analysis from Lockwood Aviation, the South Florida Rotax Service center.
:shock:

Just got my engine kit. hmmm.
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