The U.S. aircraft register, updated daily
Who holds what · as the FAA records the name

Atlantic Coast Sea Planes LLC

Holds 20 approved modifications, most of them for the Grumman G-21. FAA spelling: Atlantic Coast Sea Planes LLC.

Approved modifications 20 · newest first

2008-03-07SA4-677 · Installation of Picture Window. · G-21A, G-21
2008-03-07SA4-1055 · Rotary beacon installation. · G-21, G-21A
2008-03-07SA1969WE · Installation of passenger seats. · G-21A
2008-03-07SA355WE · Installation of hull vents. · G-21A, G-21
2008-03-07SA4-682 · Installation of retractable float. · G-21A, G-21
2008-03-07SA4-680 · Installation of windshield. · G-21, G-21A
2008-03-07SA4-681 · Installation of dorsal fin. · G-21, G-21A
2008-03-07SA1589WE · Installation of two United Aircraft of Canada Ltd. Model PT6-20A engines. · G-21A
2008-03-07SA1751WE · Increase in main fuel tank capacity to 336 gallons. · G-21C
2008-03-07SA59WE · ONE-ONLY STC, S/N B117: Installation of a Chandler Evans AN 4100 (P/N CE 9141-AA) electric driven emergency fuel... · G-21A
2008-03-07SA101WE · Installation of picture window. · G-21, G-21A (Army OA-9; Navy JRF-1; -2; -3;...
2008-03-07SA4-1467 · Installation of retractable tip floats. · G-21, G-21A (Army OA-9; Navy JRF-1; -2; -3;...
2008-03-07SA4-1109 · Metalizing of wings aft of spar. · G-21A, G-21
2008-03-07SA4-1550 · Installation of wing leading edge landing lights. · G-21A, G-21
2008-03-07SA4-683 · Installation of auxiliary fuel tanks in outboard wing sections. · G-21, G-21A
2008-03-07SA2317WE · Installation of dual brakes. · G-21 Series
2008-03-07SA4-1551 · Installation of electric gear retract motor. · G-21, G-21A
2008-03-07SA4-678 · Installation of new nose. · G-21A, G-21
2008-03-07SA108WE · Modification of bulkhead station 26, blkd sta 33, cabin floor from Sta 13-29 and addition of bouyant tank between Sta 29-31. · G-21A, G-21
2007-11-08SA1320WE · G-21C: Installation of two United Aircraft of Canada Drawing List Model PT6A-20 engines. G-21D: installation of two... · G-21C, G-21D

Source: FAA Dynamic Regulatory System (type certificate data sheets, supplemental type certificates, technical standard order authorisations). An organisation's name is as the FAA spelled it on each record; related spellings are separate pages.