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

SE154CH

Engine oil pump repair/rework specifications and procedures. Held by Harmony Machine Prod INC, which holds 2 approved modifications in all. Last revised November 3, 2003. System: engine.

What it applies to

Kind of product
Engine
Design holder
Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors; Teledyne Continental Motors
Models
C75-12, C75-12B, C75-12BF, C75-12BFH, C75-12F, C75-12FH, C75-12FHJ, C75-12FJ, C75-12J, C75-15, C75-15F, C75-8, C75-8F, C75-8FH, C75-8FHJ, C75-8FJ, C75-8J, C85-12, C85-12F, C85-12FH, C85-12FHJ, C85-12FJ, C85-12J, C85-14, C85-14F, C85-15, C85-15F, C85-8, C85-8F, C85-8FHJ, C85-8FJ, C85-8J, C90-12F, C90-12FH, C90-12FJ, C90-12FP, C90-14F, C90-14FH, C90-14FJ, C90-16F, O-200-A, O-200-B, O-200-C
Type certificates
E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-233, E-252, E-252, E-252, E-252, E-252, E-252, E-252, E-252, E-252, E-252, E-252
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.