SA3933NM
Installation of Bell Industries Piston-Shoe Sub-assembly, P/N 700001 as a replacement part for Sundstrand P/N 728638 or 700631 when used in Sundstrand Model No 60AGD18 Constant Speed Drives (CSD). Held by California Precision Hydraulics, INC, which holds 19 approved modifications in all. Last revised December 6, 1996. System: engine.
What it applies to
- Kind of product
- Aircraft
- Design holder
- The Boeing Company; The Boeing Company
- Models
- 727-100 Series, 727-200 Series
- Type certificates
- A3WE, A3WE
- On this site
- Boeing 727 37 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.