REVISION 55 · BEFORE
Maximum 422 rpm
Revision 55, page 11 ↗H2SW · Bell Textron Canada Limited
206L / 206B / 407
Revision change summary 55 → 56
Generated 2026-11-05T19:40:58.739Z
AT A GLANCE
Revision 56 changes the Model 407 maximum power-off rotor speed from 422 rpm to 442 rpm. The associated dual-tachometer reading remains 107%. No other substantive changes were identified in the supplied documents.
01
Model 407 maximum power-off rotor speed changed
Model 407, power-off rotor operation. The edited table states no serial-number or configuration-specific restriction.
The Model 407 rotor-limit table changes the maximum power-off speed from 422 rpm to 442 rpm, a 20 rpm increase. The associated “Dual Tach Reading 107%” is unchanged, as are the minimum power-off speed and both power-on limits. The documents do not state whether this edit corrects the printed rpm value or reflects a revised operating limit.
REVISION 56 · AFTER
Maximum 442 rpm
Revision 56, page 11 ↗Check the FAA source documents
Revision 55 · 11/19/2025
Open FAA DRS ↗ · Saved source PDF ↗
Revision 56 · 10/30/2026
Open FAA DRS ↗ · Saved source PDF ↗