Log books hours correction.

Discussion in 'Maintenance Bay' started by bluesideup, Sep 16, 2018.

  1. bluesideup

    bluesideup Pre-takeoff checklist

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    Hi everyone.

    In a Rotax powered acft., if an owner has installed a Hobbs meter and changed the logged hours from Total time to Hobbs / Tach, and started using the new Tach / Hobbs with a difference of about 100Hrs between them:

    1-Is there a way to legally / properly correct it?

    2-How does that affect the Airworthiness of the acft.?

    3-Will that force a conversion of that acft. from SLSA to ELSA?
    4-What are the consequences of doing that?

    Thank you.
     
  2. Ravioli

    Ravioli Final Approach

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    Guessing the outcome of this thread:

    Tach for Engine logs. Hobbs or clock for Pilot Logs.
     
  3. dmspilot

    dmspilot En-Route

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    The question is confusing.
     
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  4. James331

    James331 Touchdown! Greaser!

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    One line through it with a entry correcting hours and as they said in school “show your work” ?
     
  5. Bell206

    Bell206 Line Up and Wait

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    Don't quite follow your reasoning but...

    There's nothing official FAA wise if that is your question. As mentioned above, one method to correct time errors is line it out, enter new time with an explanation, and sign off.

    Regardless of how you track time (tach/hobbs/clock) 91.417 requires records showing total-time-in-service for each airframe, engine, and prop. So even if you switch to hobbs time you still have to have a current record of TTIS.

    This has nothing to do with aircraft time questions.... Unless you've left out some very important facts in your original post.

    Consequences for what? As owner you can record the time in service in any manner you want as long as you meet requirements of 91.417. Simple.
     
  6. bluesideup

    bluesideup Pre-takeoff checklist

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    Hi everyone.
    Thank you, for the feedback.
    I know it's a bit confusing but just to clear things up:
    Rotax requires that Maintenance be done based on the Total time, basically when the engine starts to stop regardless of RPM. Some, like Continental, you can use the Tach time / RPM dependent, which is about 80% of Hobbs/ total time. Some owners try to use the shorter/ Tach time for the Rotax and and that is not acceptable to Rotax. To maintain warranty and or benefits that may come with it, like extending TBO time from 1500 to 2000 hrs.
    What I am trying to find out is how doing that may affect the that engine / acft in the future?
    It is likely that only Rotax may know the details, they have a very confusing policy.
     
  7. Bell206

    Bell206 Line Up and Wait

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    What model/serial number engine do you have?

    And just for your info, if this engine is in an experimental aircraft and operated under Part 91, OEM TBOs are not regulatory mandated. Same goes for an O-320 in a Piper Super Cub or a O-470 in a Cessna 185 with a Standard Airworthiness Certificate. The manufacturer does not drive the bus regardless what they print. If you want to follow OEM recommendations, which is good, that is only a personal decision.

    So what is your specific concern for the future?
     
  8. bluesideup

    bluesideup Pre-takeoff checklist

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    Hi.
    I am not sure what the exact engine SN is but it's 56 648 XXX. This is an SLSA
    My concern is what if the individual wants to use the acft to get his Commercial, DPE looks and see that the logs have jumped back / lost 100 hrs.?
    If he wants to get this upgraded to 2000 hrs TBO, will this meet the Rotax requirements?
    If this does not get corrected properly will it affect the airworthiness of the acft.?
     
  9. Bell206

    Bell206 Line Up and Wait

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    Without exact info I can't really help you out. As to your last questions they have been already answered above for the most part. Based on your comments, I assume you and your friend are at the entry level side when is comes aviation experience. I still don't quite follow your question track, but can try with more information from your side.
     
  10. eman1200

    eman1200 Ejection Handle Pulled

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    <7500> what I'm interested in is updating my logbook with hours I didn't previously log, say in the last month. I know no one cares, if it's not towards a rating, blah blah blah. but I do a lot of short trips, like to go get fuel/lunch etc, and I don't put those in my logbook. but I DO want to have a better idea of my total hours. I was thinking of making a 'catch up' entry at the end of each month that brings the actual hours up to the correct # flown. can I just make an entry to reflect the totally hours I didn't log individually? no what I'm sayin? </7500>
     
  11. frfly172

    frfly172 Touchdown! Greaser!

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    I use an electronic log book,so I don’t overlook my casual flying hours. All I need to log is my IFR hours for currency.
     
  12. Bell206

    Bell206 Line Up and Wait

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    "Inspectors should advise airmen that they may reconstruct lost logbooks or flight records by providing a signed statement of previous flight time."
    http://fsims.faa.gov/PICDetail.aspx?docId=8900.1,Vol.5,Ch1,Sec8