SE2930SO
Installation of an alternate gearbox cover seal utilizing an aluminum retainer .040-inch thick with a molded-in-place elastomeric seal contoured to fit the main housing/cover flange interface. Held by Parker O-Seal Division. Last revised October 17, 1997. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division; Pratt & Whitney Division
- Models
- JT8D Series, JT8D-217A, JT8D-217C, JT8D-219, JT8D-217, JT8D-209
- Type certificates
- E2EA, E9NE, E9NE, E9NE, E9NE, E9NE
- 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 7, 2026.