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

SA4008NM

Installation of removable panels on the battery box slides. Held by Bogert Aviation, which holds 5 approved modifications in all. Last revised September 30, 2005. System: electrical power.

What it applies to

Kind of product
Aircraft
Design holder
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Models
PA-23, PA-23-160, PA-23-235, PA-23-250 (Navy UO-1), PA-24, PA-24-250, PA-24-260, PA-24-400, PA-18, PA-18-105 (Special), PA-18-125 (Army L-21A), PA-18-135, PA-18-150, PA-18A, PA-18A-135, PA-18A-150, PA-18AS-135, PA-18AS-150, PA-18S, PA-18S-105 (Special), PA-18S-125, PA-18S-135, PA-18S-150, PA-20-115, PA-20-135, PA-20S-115, PA-20S-135, PA-22-108, PA-22-135, PA-22-150, PA-22-160, PA-22S-135, PA-22S-160, PA-25, PA-25-235, PA-25-260, PA-28-140, PA-28-150, PA-28-160, PA-28-180, PA-28-235, PA-28R-180, PA-28R-200, PA-28RT-201, PA-30, PA-39, PA-32-260, PA-32-300, PA-32-301, PA-32R-300
Type certificates
1A10, 1A10, 1A10, 1A10, 1A15, 1A15, 1A15, 1A15, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A2, 1A4, 1A4, 1A4, 1A4, 1A6, 1A6, 1A6, 1A6, 1A6, 1A6, 2A10, 2A10, 2A10, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, 2A13, A1EA, A1EA, A3SO, A3SO, A3SO, A3SO
On this site
Piper PA-18 Super Cub 3,620 registered
Piper PA-20 Pacer 323 registered
Piper PA-22 Tri-Pacer and Colt 2,942 registered
Piper PA-23 Apache and Aztec 1,315 registered
Piper PA-24 Comanche 2,428 registered
Piper PA-25 Pawnee 455 registered
Piper PA-28 Cherokee, Warrior, Archer and Arrow 18,636 registered
Piper PA-30 Twin Comanche 879 registered
Piper PA-32 Cherokee Six, Lance and Saratoga 3,917 registered
Piper PA-39 Twin Comanche C/R 82 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 23, 2026.