Compliance documentation

FAA §61.51 validation in QuickLogs

If you are turning a paper logbook into a digital record, the real risk is not whether software can read the page. It is whether a bad entry slips through and follows you into a checkride, interview, application, or audit.

QuickLogs is built around that reality. Every extracted flight is checked for missing required fields, impossible time math, questionable aircraft identifiers, and incomplete instrument details before it moves toward export. Just as important, those issues are surfaced for pilot review rather than passed through quietly.

This page explains, in plain language, what QuickLogs checks against 14 CFR §61.51, where FAA reference data is used, and what a validation result does and does not mean.

Why this matters to pilots

The point is simple: catch weak, incomplete, or suspicious logbook entries before they become digital records you rely on. QuickLogs surfaces both blocking errors and review warnings directly on the relevant fields, so problems can be fixed during review instead of discovered later.

The checks are organized around the same fields the FAA expects on a pilot logbook entry, as defined in 14 CFR §61.51. Aircraft and airport cross-checks use public FAA data sources so an N-number or airport identifier can be verified independently.

In practice

Think of this as a review layer, not a legal opinion. QuickLogs helps catch obvious problems early, but the pilot still confirms the final record against the original logbook.

A typical example: if a flight logs PIC and SIC time that exceeds total time, or an instrument approach is missing the runway or airport, QuickLogs flags that entry before export so it can be corrected in Review Station.

What QuickLogs checks

Required logbook fields

Reference: 14 CFR §61.51(b)

QuickLogs checks the core fields a pilot is expected to record for each flight entry before that record moves toward export.

  • Flight date must be present, valid, and not in the future.
  • Departure and arrival airports must be present for non-simulator flights.
  • Airport codes are checked for valid format and cross-referenced against an airport database sourced from FAA open data.
  • Aircraft identification is checked for FAA N-number format when a U.S. registration is used.

Aircraft identity cross-checks

Reference: 14 CFR §61.51(b)(3)

When an aircraft registration is available, QuickLogs compares it against a snapshot of the public FAA aircraft registry to catch likely OCR mistakes that matter later in reviews, applications, and exports.

  • N-numbers are compared against the FAA N-number registry. Pilots can verify any individual registration directly through the same registry.
  • Entries are flagged when the registration is not found in the registry snapshot used by the system.
  • Aircraft make and model are compared against registered values when both fields are available.
  • Low-confidence auto-corrections on aircraft registration are surfaced for human review rather than applied silently.

Time and arithmetic validation

Reference: 14 CFR §61.51(b), (c), and (e)

QuickLogs flags mathematically impossible combinations and timing relationships that often come from handwriting ambiguity or transcription mistakes.

  • Time values outside a valid range are blocked.
  • Landing and count fields outside a valid range are blocked.
  • Component times such as PIC, SIC, solo, dual, day, and night are compared against total flight time.
  • Solo plus dual cannot exceed total time, and PIC plus SIC cannot exceed total time.
  • CFI time cannot exceed PIC time, and suspicious CFI to PIC mismatches are flagged for review.
  • Day plus night totals are checked against total duration when both are logged.

Instrument and approach completeness

Reference: 14 CFR §61.51(g)

Instrument entries need enough detail to remain useful and export-ready, especially if the record will feed another digital logbook later.

  • Approach types must match supported export values.
  • Each logged approach must include the required runway and airport details before export.
  • Incomplete approach details are treated as blocking issues until corrected.

Chronology and consistency warnings

Reference: Session-level review checks

Some issues are not always legally invalid, but they are strong signals that an extracted value may need a second look.

  • Entries are reviewed for dates that break the surrounding page sequence.
  • Out-of-order dates are flagged when they look like OCR misreads rather than intentional chronology.
  • Night landings without night time, or night time without night landings, are flagged as review items.
  • Flights that log both solo and dual time are flagged for confirmation when the math is still technically possible.

What the flags mean

Every flag attached to an extracted flight falls into one of three categories. Review Station shows them inline on the relevant field so they can be addressed during normal review.

Blocking errors
Issues that prevent a record from qualifying as export-ready because the data is missing, impossible, or incomplete in a way that breaks downstream use.
Review warnings
Suspicious or non-standard entries that should be verified by the pilot, but may still be correct depending on the source logbook.
Dismissible warnings
When QuickLogs can detect that a value looks unusual but a pilot may legitimately keep it, the warning can be dismissed after review.

What this does not guarantee

A logbook entry that passes these checks is in better shape for export and less likely to contain obvious logging defects. It does not guarantee that the entry is sufficient for every rating, employer, insurer, or FAA review context.

The pilot remains responsible for confirming that the extracted entry matches the original logbook and reflects how that flight should actually be logged. QuickLogs is a review tool, not a substitute for pilot judgment or legal advice.

External references

The rules and data sources referenced on this page are public. Each link opens the primary source directly.

Scope and updates

This page describes current QuickLogs validation behavior. The FAA can update guidance or interpretive expectations over time, and QuickLogs may add or adjust checks as the product evolves. Any material change to the rule set will be reflected here.