SE87WE
Replace the airfoils on P&WA P/Ns 505351, 536751, 665951, 665851 first stage turbine nozzle guid vanes on P&WA engine models listed. Held by Chromizing Company, which holds 3 approved modifications in all. Last revised December 21, 1977. 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
- JT3D-1, JT3D-1-MC7, JT3D-3B, JT3D-3, JT3D-7, JT3D-1-MC6
- Type certificates
- 1E8, 1E8, 1E8, 1E8, 1E8, 1E8
- 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.