38.0789° N, 75.5429° WPlaced by OpenAirDocs at the center of ZIP code 21851, within about 6 miles. The last owner’s mailing address, not where the aircraft was based.
From the FAA registry file of October 28, 2026, cancelled registrations. Owners’ street addresses are left out. The Mode S code belongs to the N-number, not the airframe.
Other aircraft with N278 · 4
The FAA can assign a mark to another aircraft once a registration is cancelled. No aircraft carries N278 now.