For the airplane owner

One airplane on the board. Oil and filter every 50 tach hours, on a meter line. The annual inspection every 12 months, on a calendar line. The ELT inspection every 12 months on its own calendar line, with the battery's printed replacement date on a line of its own. The transponder check every 24 calendar months, on a calendar line. That is the whole list, and it lives on one due board.

You know the last flight and the last oil. Today's entry says you flew 2.3 tach hours and the tach reads 2,184.6. Say that to Muse in the chat you already have open and the reading is written. The oil and filter went in at Ridgeview Aviation on May 28, 2026, the tach at 2,150.0, and the invoice said $186. Fifty tach hours from 2,150.0 puts the next change at 2,200.0, and the board subtracts on the meter: 15.4 tach hours left. At 90 tach hours a year, that is about two months of weekends.

You know the shop visits too. The annual was signed at Ridgeview Aviation on March 14, 2026, and the invoice said $1,940. Say that date once and the annual line is written, next due March 14, 2027, with 160 days left as of October 5. The ELT inspection is its own 12-month line: last done with that annual, so it comes due March 14, 2027 too, and the board keeps it separate so a shop visit that moves does not take the ELT with it. The transponder check is every 24 calendar months: last checked January 12, 2025, next due January 12, 2027, with 99 days left as of October 5. The battery in the ELT carries its own printed date, replace by July 7, 2027, with 275 days left as of October 5.

Before the next flight, ask Muse what's due on the airplane. The oil comes back with 2,200.0 and the 15.4 tach hours left. The annual comes back with March 14, 2027 and the 160 days. The transponder comes back with January 12, 2027 and the 99 days. The board subtracts on the meter and on the calendar and names what is left, and no row sits in the due path. You asked in the chat you already have open. There is no day-to-day owner app to click.

The lines keep their cadence. The oil line is every 50 tach hours, so it moves when the airplane flies and waits when it sits: a hangared September does not spend tach hours, and the line does not care. The annual is every 12 months: a soft flying year does not push March 14. The transponder is every 24 months: clear radios do not push January 12. A late tick is logged on the day it happened; the cadence does not move. These are the cadences you told Muse, not spec-sheet promises.

The airplane gets the after-flight habit too. When you tie down, tell Muse the tach reading in the same breath as anything the flight surfaced: the left brake that grabs halfway through the taxi, the side window that never quite seats. Muse keeps each one as a shop note on the airplane, so the squawk list rides to Ridgeview Aviation with the next visit instead of riding on a sticky note in the flight bag. Fold the readout into the walk-around. The board keeps the lines, and the habit keeps the list honest between them.

Your shop preference is one ask too. Say it once: Always Ridgeview Aviation on N4721E. Muse writes it, and the next annual booking starts there without you naming the shop again.

The board can call ChatGPT too. Subscribe once and ChatGPT hears when a logged tick puts the oil or the annual on the board, in a signed webhook naming the job and how late. An agent that speaks MCP can hear the same board. You did not have to ask first.

Every row you log stays in the service log. The oil rows at 2,050.0, 2,100.0, and 2,150.0 sit in the history with their receipts, next to the annual rows and the transponder rows, each with the shop and the cost. So the day you sell the airplane, say it once: sold. Muse archives N4721E and the due board drops it that day, and the service log stays: years of oil at 50 tach hours, receipts, the sticky left brake signed off at the 2027 annual. Hand that history to the buyer next to the logbooks. If the deal falls through, one ask puts it back on the board.

One line, said plainly: the aircraft logbooks and the mechanic's sign-offs are the legal record. The annual entry is signed in the airframe logbook; the oil entry goes in the engine logbook; the transponder check lands on the shop's work order and in the logbook. Maintenance Due is the owner's personal due board and service log. It is not an airworthiness or FAA compliance tool, it signs nothing, and it files nothing. It counts the tach hours and the calendar days you tell it.

The vehicle log on /vehicle-maintenance-log shows how meter rows look. Copy the prompt on /for-your-agent and paste it into Muse. Free.