FLIGHTLEDGER / PRACTICAL GUIDE
Pilot logbook: organize a digital record you can trace to its source
Plan the fields, source references and backup copies before converting a pilot logbook spreadsheet.
By Zijian Xiao
Start with the records you already have
A useful pilot logbook workflow begins with an inventory of your source records: paper books, application exports, spreadsheets and any supporting documents. Keep originals unchanged and identify which periods each source covers. You can organize a small digital collection in a spreadsheet without buying a conversion service. Use one row per flight and keep page totals or historical balances outside that flight table. If two sources overlap, record the overlap before combining them rather than deleting similar-looking rows automatically. The aim is a traceable working record, not simply a larger total.
Define a stable set of fields
Begin with date, aircraft registration, aircraft type, route and total time, then include the time components and landings your records actually supply. Keep PIC, SIC, night, cross-country and instrument fields separate. Include a remarks or source-reference column for entries that need clarification. Do not fill unknown fields with zero merely to make every cell nonempty. A known zero and an unknown value mean different things. Preserve the original labels from an application export so you can explain how they correspond to the columns in your working table.
Declare units before entering more data
Write down whether numeric times are decimal hours or H.MM, and use a consistent date convention. Decimal 1.50 means one hour thirty minutes, while decimal 1.30 means one hour eighteen minutes. In H.MM notation, 1.30 instead means one hour thirty minutes. Colon values such as 1:30 make the intended minutes clearer. Keep each source's convention visible during consolidation. Changing a spreadsheet's cell format does not necessarily change the underlying time meaning, so compare a known flight before applying a formula across the entire record.
Keep review questions with the source
Check missing dates, implausible component values and repeated rows, but do not treat every warning as proof that the original flight is wrong. Multiple flights on one date are ordinary data, and two similar rows may be legitimate. Compare the original before removing or changing an entry. Legal definitions of creditable flight time, roles and required evidence need the appropriate instructor, reviewer or authority; a spreadsheet sum cannot decide them. Retain source documents and signatures separately rather than assuming an exported table substitutes for all supporting records.
Save a usable record beyond one service
Keep an unchanged source export, a checked working copy and a copy of the delivered outputs in your own storage. Open the spreadsheet and any PDF before relying on them. Confirm record count, period coverage and a few known flights, including unusual remarks and identifiers. If you move to another logbook application, check its required CSV headers or available mapping controls and compare totals after import. A temporary file converter can help normalize and review data, but the ongoing logbook and its backups remain a separate responsibility. Decide where those permanent records will live before uploading anything.
Create an inventory before merging histories
Make a source index with one entry for each paper volume, application export or spreadsheet. Record its first and last flight dates, number of flight rows, time notation and any known overlap. A carry-forward from a paper book may summarize flights already represented elsewhere, so keep it outside the row-level flight table until that overlap is resolved. Assign a source reference to each working row and retain the index with the consolidated file. This allows you to investigate a later total difference by source period rather than searching a combined history with no record of where its rows came from.
Maintain separate correction and backup records
When you correct an entry, note the source reference, the original value, the checked value and why it changed. If a paper signature or supporting document is relevant, keep its location with that note rather than implying the spreadsheet contains the evidence itself. After each substantial update, export a readable table and open a retained copy independently of the working application. Check several older flights as well as the latest entries. A backup is useful only if it contains the expected history and can be read; a familiar filename alone does not establish that the full logbook was saved.
Where FlightLedger fits
FlightLedger reviews an existing digital flight table, not a permanent logbook. One CSV or XLSX may contain up to 8 MiB, 20,000 flights and 100 columns; scans, PDFs, legacy XLS and paper transcription are unsupported. Select date order and decimal hours or H.MM for numbers without a colon; 1:30 always means hours and minutes. The complete report, first twenty converted rows and exclusion-list CSV are free without an account. Full-file downloads require a file credit even below twenty rows. It checks arithmetic, not flights, signatures or FAA/EASA eligibility. Files expire 24 hours after upload, including paid results.
Start with your own file.
Confirm your mapping and review the report before choosing an export.
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