The U.S. aircraft register, updated daily
Approved modifications · supplemental type certificate · current · reissued

SR09234RC

Installation of Navigation Switching and GPS System in accordance with Master Drawing List ACRO 61-34-00-103, Rev A dated February 21, 2000, or later FAA approved revision. Held by Acrohelipro Global Services INC (Canada), which holds 5 approved modifications in all. Last revised February 17, 2005. System: instruments and avionics.

What it applies to

Kind of product
Aircraft
Design holder
Sikorsky Aircraft Corporation; Sikorsky Aircraft Corporation
Models
S-61L, S-61N
Type certificates
1H15, 1H15
On this site
Sikorsky S-61 54 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 20, 2026.