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Aircraft record

N804ST1980 Cessna 501

Registration validUnclaimedSource: FAA, updated Oct 16, 2026

Safety record in brief:1 NTSB accident (substantial damage, May 2016)6 ADs may apply1 service difficulty report

Registration
Valid
expires Jun 30, 2027
Based in
Lewes, DE
owner city / state
Owners
1
since 2017
NTSB events
1
substantial, 2016
ADs may apply
6
confirm with A&P
Service reports
1
since 1995

Registration

FAA Aircraft Registry · Oct 16, 2026
Registered owner
Ial Corp
Owner type
Corporation
City, state
Lewes, DE
Certificate issued
Jun 22, 2017
Expires
Jun 30, 2027
Airworthiness
Standard · Normal
Airworthiness date
May 19, 2005

We never show street addresses, even though they appear in the public FAA file. Individual owners are shown by city and state only.

Airframe & engine

FAA Registry + type data

Airframe

Manufacturer
Cessna
Model
501
Year
1980
Serial number
501-0146
Aircraft type
Fixed wing multi engine
Category
Land
Certification
Type Certificated
Seats
8
Engines
2
Max takeoff weight
Up to 12,499 lb
Mode S code
AAF25B

Engine

Make and model
Williams Fj 44 Series
Type
Turbo-fan
Power
1,900 lb thrust

Total time and engine hours aren't public. They appear here once the owner adds logbooks.

Ownership history

Ownership history from FAA records
  1. 2017 – nowIal CorpLewes, DE · current

Individual owners are shown by city and state only.

Safety record

NTSB · Oct 15, 2026 · FAA ADs · Oct 16, 2026 · SDRs · Oct 16, 2026

NTSB events (1)

Accident · substantial damage

May 24, 2016 · Texarkana, AR

The pilot's failure to use supplemental oxygen as required during high-altitude flight, which resulted in his loss of consciousness following a loss of cabin pressurization. Contributing to the accident was the separation of the air conditioning system's primary pressurization duct and the subsequent failure of the aft pressure bulkhead check valve flapper due to progressive weakening from age.

Damage
Substantial
Injuries
Minor
Report
CEN16LA197

From NTSB records; matched by serial number.Read NTSB report (search CAROL for CEN16LA197)

Accident history for this model

ADs published since 1998 that may apply (6)

These match the airframe or engine model. Whether each one applies, and whether it's been complied with, depends on serial numbers, equipment and logbook entries. Applicability must be confirmed by a mechanic against the aircraft's records.

ADSubjectEffectiveApplies to
2015-17-12Air ConditioningSep 29, 2015Airframe (501)Certain serial numbers: 500 0001–0689; 501 0001–0689; 550 0002–0733; 550 0801–1136; 551 0002–0733; 551 0801–1136; …. Only with: Air conditioning system installed via Cessna STC SA3849SW, SA7580SW, SA7753SW, or SA8918SW.
2013-09-11Air ConditioningJul 5, 2013Airframe (501)Certain serial numbers: 500 0001–0689; 501 0001–0689; 550 0002–0733; 550 0801–1136; 551 0002–0733; 551 0801–1136; …
2007-11-17Cessna Model 500, 501, 550, 551, S550, 560, 560XL, and 750 AirplanesJul 6, 2007Airframe (501)Serial numbers per Cessna Service Bulletins SB500-26-02, SB550-26-05, SB560-26-01, SB560XL-26-02, SB750-26-05, SBS550-26-02 (Table 1 of this AD)
2006-06-03Cessna Model 500, 501, 550, S550, 551, and 560 AirplanesApr 20, 2006Airframe (501)Certain serial numbers: 500 0001–0689; 501 0001–0689; S550 0001–0160; 550 0002–0733; 551 0002–0733; 550 0801–1075; …
2004-09-05Cessna Model 500, 501, 550, and 551 AirplanesJun 2, 2004Airframe (501)Certain serial numbers: 500 0001–0689; 501 0001–0689; 550 0002–0733; 551 0002–0733. Only with: Equipped with BFGoodrich brake assembly P/N 2-1528-6 or 2-1530-4.
Show all 6 ADs
ADSubjectEffectiveApplies to
98-04-38Cessna Model 500, 501, 550, 551, and 560 Series AirplanesMar 25, 1998Airframe (501)Only with: Equipped with pneumatic deicing boots.

AI-extracted — verify against original. Matched from each AD's applicability section; ADs replaced by a later AD are left out.

Service Difficulty Reports (1)

Reports of failures and defects that operators and repair stations sent to the FAA since 1995. A report describes one finding; it is not an accident.

  • Air conditioning and pressurization · check valve · failedMay 23, 2016

    AIRCRAFT AT CRUISE AT 43,000'. CONDITIONED AIR DUCT CAME LOOSE FROM WATER SEPARATOR, CABIN BEGAN DEPRESSURIZING. CHECK VALVE LOCATED ON AFT PRESSURE BULKHEAD FAILED WHEN IT CLOSED BREAKING APART INTO CONDITIONED AIR DUCT LINE. AIRCRAFT BUILT IN 1980. HINGED DOORS ON CHECK VALVE ARE FABRICATED OUT…

    From FAA Service Difficulty Reports; matched by N-number and serial number.

Sources

  • FAA Aircraft RegistryRegistration, owner city and state, airframe, engineupdated Oct 16, 2026
  • NTSB accident and incident databaseAccidents and incidents since 1982updated Oct 15, 2026
  • FAA Airworthiness Directives (Federal Register)ADs published since 1998updated Oct 16, 2026
  • FAA Service Difficulty ReportsReports since 1995updated Oct 16, 2026

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