Single-engine piston

N35HB

1988 Homebuilt SX 300

Registered No accidents on file
Built
1988
Serial
CP-59
Class
Single-engine piston
Engines
Lycoming IO-540 series
Status
Current as of October 2026
Registered owner
Downes Greg + 1 co-owner (Partnership)
Based
Iowa City, IA
Registration record

N35HB on the FAA register

Type
1988 Homebuilt SX 300
Serial
CP-59
Engines
Lycoming IO-540 series
Registered owner
Downes Greg + 1 co-owner
Iowa City, IA
Certificate issued
2017-08-03
Airworthiness date
1988-08-12
Registration expires
2027-08-31
Airworthiness class
Experimental · amateur-built
Mode S (hex)
A3E325
Mode S (octal)
50761445
Seats (type)
2
Weight class
up to 12,499 lb
Status
Current as of October 2026
Registry history

Timeline

  • 2027-08-31
    Registration expires (renewal due).
  • 2017-08-03
    Certificate of registration issued as N35HB.
  • 1988-08-12
    Airworthiness date on the current FAA record (experimental category (amateur-built)).
Overview

About N35HB

N35HB is a 1988 Homebuilt SX 300, serial number CP-59. The FAA register lists Downes Greg + 1 co-owner as the registrant in Iowa City, Iowa. The current certificate of registration was issued on August 3, 2017 and expires on August 31, 2027.

The FAA aircraft reference file describes the type as a single-engine piston, one Lycoming IO-540 series engine and 2 seats. Its airworthiness certificate is experimental category (amateur-built), dated August 12, 1988.

No NTSB accident or incident reports and no FAA preliminary notices are on file for N35HB.

Safety record

Accident & incident history

✓ No NTSB accident or incident reports and no FAA preliminary notices on file for N35HB.

Sources: NTSB aviation accident database and CAROL case system, FAA preliminary accident & incident notices. Search accident records

Same state

Other aircraft registered in Iowa

All 4,510 aircraft registered in Iowa →
Similar aircraft

Other single-engine pistons on the register

Own N35HB?

Get a free valuation, digitize the logbooks, or list it on fyiAero.

Free valuation Logbook transcription

Browse: Aircraft registered in Iowa· Registry by state· FAA registry stats

Data: FAA Aircraft Registry (October 2026), including deregistered aircraft; NTSB and FAA accident data; fyiAero listing history. Individual owners' names are shown to signed-in users and street addresses are never shown. Type figures are published specifications, not this aircraft's.