SE702NE
Modification of crankcase tappet bores to accommodate large tappets. Held by Mattituck Airbase, INC, which holds 2 approved modifications in all. Last revised October 24, 1990. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation; Textron Lycoming AVCO Corporation
- Models
- O-320-H Series, O-360-E1A6D, O-360-E1AD, O-360-E1BD, O-360-E2AD, O-360-E2BD
- Type certificates
- E-274, E-286, E-286, E-286, E-286, E-286
- 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.