ST00049BO
Installation of a Pratt & Whitney Engine Services, Inc. Health Usage Monitoring System (HUMS) Model 1022, P/N HUMS-A-030-1. Held by Pratt & Whitney Engine Services INC., which holds 48 approved modifications in all. Last revised October 22, 2007. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- Robinson Helicopter Company; Robinson Helicopter Company; Robinson Helicopter Company; Robinson Helicopter Company
- Models
- R22 MARINER, R22, R22 ALPHA, R22 BETA
- Type certificates
- H10WE, H10WE, H10WE, H10WE
- On this site
- Robinson R22 817 registered
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 5, 2026.