CORNERSTONE AVIATION LLC

Part 135 operator · designator 6SKA

Data confidence: Records are linked by certificate number, aircraft registration, or a name match that a reviewer has confirmed. Each record below shows how it was linked.

Also recorded as: CORNERSTONE AVIATION LLC, Cornerstone Aviation

Accident & enforcement record

Events that happened, regardless of the operator's own reporting. Each links to its public source.

NTSB accidents & incidents

Accident · 2026-06-23 Operator named in NTSB report
CESSNA 172 (N387AF) Fatal injury Part 91

Operated by CORNERSTONE AVIATION (per NTSB report)

Not yet finalized — may be revised.
Source: NTSB case WPR26FA232
Accident · 2018-11-21 Operator named in NTSB report
Cessna 172 (N21621) No injuries Part 91

Operated by Cornerstone Aviation (per NTSB report)

The student pilot's improper landing flare, which resulted in a bounced landing.

Source: NTSB case GAA19CA076
Accident · 1989-06-25 Operator named in NTSB report
CESSNA 172P (N53667) Fatal injury Part 91

Operated by CORNERSTONE AVIATION (per NTSB report)

FAILURE OF THE PILOT TO MAINTAIN SUFFICIENT AIRSPEED WHILE FLYING OVER RISING TERRAIN, WHICH RESULTED IN AN INADVERTENT STALL AND COLLISION WITH WOODED TERRAIN. FACTORS RELATED TO THE ACCIDENT WERE: THE TERRAIN CONDITIONS AND FAILURE OF THE PILOT TO MAINTAIN SUFFICIENT ALTITUDE OVER MOUNTAINOUS TERRAIN.

Source: NTSB case BFO89FA048
Accident · 1988-07-01 Operator named in NTSB report
CESSNA 172M (N1534V) No injuries Part 91

Operated by CORNERSTONE AVIATION (per NTSB report)

Source: NTSB case ATL88LA206
Accident · 1988-05-18 Operator named in NTSB report
CESSNA 152 (N757VH) No injuries Part 91

Operated by CORNERSTONE AVIATION (per NTSB report)

Source: NTSB case ATL88LA176

FAA enforcement actions

No FAA enforcement actions linked to this operator.

Maintenance disclosure history

Service Difficulty Reports are self-reported maintenance findings. The NUMBER of reports is not a measure of reliability — diligent operators file more, not fewer. These are shown for transparency, not as a negative signal. To verify a report, search its control number at the FAA SDRS site.

Reports span 2021–2021. Most-reported systems: Engine oil (79) — 1. Most-common natures of condition, as filed: WARNING INDICATION — 1.

1 report on file.

WARNING INDICATION · 2021-02-17 Matched by certificate designator
N953AB · ATA 7931

Part: TRANSDUCER — INTERMITTENT (OIL PRESSURE) · airframe 1,168 hrs

FLUCTUATION OF INDICATED ENGINE OIL PRESSURE CAUSED BY FAILING OIL PRESSURE TRANSDUCER. OIL PRESSURE TRANSDUCER WAS CHANGED WITH A NEW TRANSDUCER AND ISSUE WAS RESOLVED. TRANSDUCER PN 12635-004.

Source: SDR 6SKA202102191

Linked aircraft

N-numberMake / modelYearStatusLink basis
N1534VOperator named in NTSB report
N21621CESSNA 172SValid RegistrationOperator named in NTSB report
N2288DCIRRUS DESIGN CORP SR222011Valid RegistrationMatched by certificate designator
N387AFCESSNA 172S2006Valid RegistrationOperator named in NTSB report
N53667Operator named in NTSB report
N67TZCIRRUS DESIGN CORP SR222016Valid RegistrationMatched by certificate designator
N753PACIRRUS DESIGN CORP SR222013Valid RegistrationMatched by certificate designator
N757VHOperator named in NTSB report
N777GBCIRRUS DESIGN CORP SR222018Valid RegistrationMatched by certificate designator
N817TMCIRRUS DESIGN CORP SR222020Valid RegistrationMatched by certificate designator
N953ABCIRRUS DESIGN CORP SR222011Valid RegistrationMatched by certificate designator

Aircraft with earlier records under this certificate

Maintenance and accident records on this page also cover aircraft that are not in this operator's current FAA fleet list. Charter and management fleets change — owners switch management companies, sell, or export aircraft. Where the registry shows what became of a tail, it is noted below.

1 aircraft filed records under this certificate within the last two years but are not in the fleet list we hold — fleet lists can lag actual operations.

  • N21621 (CESSNA 172S) — records 2018 · registered to CSA AIRCRAFT LEASING LLC (owner ≠ operator)
  • N53667 — records 1989 · no longer on the FAA registry
  • N1534V — records 1988 · no longer on the FAA registry
  • N757VH — records 1988 · no longer on the FAA registry