About LogAloft

LogAloft is a pilot logbook that also works out the cosmic radiation of every flight you fly. It is made by Masterpilots LLC in Orlando, Florida, and built by a working airline pilot who wanted to know his own dose.

Why it exists

Aircrew are among the most exposed of all radiation workers, yet almost none keep track of their own dose. Logbooks keep hours, limits and currency. LogAloft keeps those too, and adds the dose of each flight next to them, so the yearly total is there when you want it.

How the dose is worked out

• The model is the FAA's CARI-7A, the same class of model airlines and regulators use.
• For a flight that has flown, LogAloft uses its real track and levels. For a future flight, the route it usually flies, or the one a dispatcher would plan for that day's winds.
• The Sun's activity that month is included. Solar radiation storms, which are rare, are added on request (Settings in the logbook), from NASA's NAIRAS model.

The result is about as accurate as the model, roughly ±20%. LogAloft is not a dosimeter and not an official dose record. The details, and how the numbers compare with measurements on board, are in Method and validation.

Your data

Your logbook is yours. We never sell it or show your flights to airlines or employers. The privacy policy has the details.

Contact

Author

Carlos Bousono · Masterpilots LLC, Orlando, FL · ORCID 0009-0000-3999-0345 · source available under the PolyForm Noncommercial License 1.0.0; the model tables and validation data under CC BY 4.0.

Also from Masterpilots. GSV₁, a groundspeed-based V₁ criterion for takeoff wind shear: the paper · the GSV₁ calculator · a general-audience article · the case study.

Questions and ideas are welcome: contact support, or read the help center and the blog.