LogGap: logbook pre-screen before the pre-buy inspection

What you get

One report per aircraft, built from its own paperwork.

Dated timelineEvery entry from every volume (airframe, engine, propeller, avionics) in date order, with the tach or hours at each entry.
Missing-annual flagsGaps longer than 12 calendar months between annual inspections under 14 CFR 91.409(a), with the last signed date and the first one after the gap.
AD-gap flagsAirworthiness Directives (14 CFR Part 39) cited in the logs with no matching compliance entry, or with a compliance entry that has no sign-off.
Recurring-check trackerTransponder and altimeter/static checks at the 24-calendar-month interval, and the last recorded date for each.
Questions for the IAA numbered list of what to ask the seller and the inspector at the pre-buy, based on the flags above.

Example

Report: sample piston single (not a real aircraft)

1994-03-12Annual inspection, signedOK

1996-05-02Transponder check, 91.413OK

1998-08-19AD cited, no sign-off on the entryAD GAP

2001-04-30Annual inspection, signedOK

2002 to 2015No annual inspection entries in the logsANNUAL GAP

Questions for the IA

Was the 2015 annual done and not logged, or was it skipped?
Does the seat-rail AD have a signed compliance record on file?

3 flags, 2 questions. Generated from the uploaded scans only.

How it works

Three steps, from the seller's scans to your questions.

Upload the scans

PDF or phone photos of every logbook volume the seller has: airframe, engine, propeller and any avionics or AD sign-off sheets. Pages can be in any order.

The pre-screen runs

Entries are sorted into a timeline. Annual intervals, recurring checks and AD references are compared against the entries that should exist for them.

Take the report to the pre-buy

You get the timeline, the flags with their source page numbers, and the list of questions for the inspector. Use it before you book the inspection.

Who it is for

Buyers who want the paperwork checked before the money moves.

Prospective buyers of a piston aircraftYou are looking at a specific tail number and want the logs read before you fly it or pay a deposit.
Aircraft brokersScreen the logs on listings you take on, and send the report with the listing so the buyer starts with the same flags.
Pre-buy inspectorsGet the timeline and gap list before you open the logs on site, so the inspection time goes to the aircraft and not to the paperwork.

Pricing

Pay per aircraft, or subscribe if you screen many.

Per aircraft

$49 one-time

One aircraft, all uploaded logbook volumes
Timeline, missing-annual and AD-gap flags
Recurring-check tracker and IA question list
PDF report you keep

Screen one aircraft: $49

Charged once per aircraft report.

Broker plan

$29 / month

Everything in the per-aircraft report
Reports for every aircraft on your listings
Send the report to the buyer with the listing

Start broker plan: $29/mo

Billed monthly.

FAQ

Questions before you buy.

Does LogGap replace the pre-buy inspection?

No. It reads the paperwork and lists what needs checking. The inspection still has to be done by a qualified inspector on the aircraft. Flags are a starting list, not a finding of airworthiness.

Is a human reviewing my report?

No. The report is produced automatically from the scans you upload. Nobody at LogGap reads it on your behalf, and it is not certified or approved by any aviation authority.

What kind of scans work?

Clear PDF or phone photos of each logbook page. Handwritten entries are read as written, so a blurred or cropped page produces a flag that says the entry could not be read, rather than a guess.

Which aircraft does it cover?

US-registered piston aircraft, checked against FAA rules: the annual inspection interval in 14 CFR 91.409(a), the 24-month transponder and altimeter/static checks in 91.413 and 91.411, and Airworthiness Directives under Part 39.

What if the seller has missing volumes?

The report says which periods have no entries at all. A missing volume is listed as a gap, so you can ask the seller for it before you commit.

Can I use this for legal or insurance decisions?

The report is a document check, not legal advice or an insurance assessment. Talk to your attorney, insurer or inspector before relying on it for a purchase decision or a claim.

Read the logbooks before you pay for the pre-buy.