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

SR01817SE

Fabrication of Helipod II Slim Line (SL) external cargo pod in accordance with Helipod USA Master Data List No. NW007-HPSL-27-005, revision 2, February 5, 2008, or later FAA-approved revision; and installation of this system in accordance with Helipod USA Installation Drawing HPR44IISL25201, Revision NC, dated May 1, 2006, or later FAA-approved revision. This modification must be maintained in accordance with Helipod USA Instructions for Continued Airworthiness Document No. NW007-HPSL-27-007, revision IR, dated May 1, 2006, or later FAA-approved revision. Held by Simplex Manufacturing Company, which holds 60 approved modifications in all. Last revised July 7, 2009. System: other and general.

What it applies to

Kind of product
Aircraft
Design holder
Robinson Helicopter Company; Robinson Helicopter Company
Models
R44, R44 II
Type certificates
H11NM, H11NM
On this site
Robinson R44 1,937 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.