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

SR02617SE

Installation of a Mechanical Specialties Model 909 Cargo Hook. Held by Mechanical Specialties INC, which holds 10 approved modifications in all. Last revised June 2, 2020. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
ACE Aeronautics LLC; BHI H60 Helicopters LLC; Billings Flying Service Inc; Carson Helicopters Inc.; Delta Enterprise; High Performance Helicopters Corp.; Northwest Rotorcraft LLC; Pickering Aviation Inc.; PJ Helicopters Inc; Sikorsky Aircraft Corporation; Sikorsky Aircraft Corporation; Sikorsky Aircraft Corporation; Sikorsky Aircraft Corporation; Sikorsky Aircraft Corporation; SIXTYHAWK TC LLC; SIXTYHAWK TC LLC; SKYDANCE BLACKHAWK OPERATIONS LLC; Timberline Helicopters Inc.; Unical Aviation Inc.
Models
UH-60A, BHI H60 (UH-60A), UH-60A, UH-60A, UH-60A, UH-60A, UH-60A, EH-60A, UH-60A, S-70, S-70C, S-70C(M), S-70C(M1), S-70A, EH-60A, HH-60L, UH-60A, UH-60A, UH-60A
Type certificates
R00005RC, R0012DE, R00021LA, R00020AT, R00019AT, R00054SE, R00058SE, R00003AC, R00020LA, H2NE, H3NE, H4NE, H4NE, H5NE, R00025LA, R00025LA, R00022LA, R00052SE, R00023LA
On this site
Pickering Aviation Inc UH-60 6 registered
Sikorsky EH-60 33 registered
Sikorsky HH-60 32 registered
Sikorsky S-70 29 registered
Sikorsky UH-60 357 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.