CHESAPEAKE BAY HELICOPTERS INC

Part 135 operator · designator 4CZA

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: CBH AVIATION, CHESAPEAKE BAY HELICOPTERS INC

Accident & enforcement record

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

NTSB accidents & incidents

Acc · 2017-04-27 Operator named in NTSB report
ROBINSON R44 (N728CB) Minor injury Part 91

Operated by Chesapeake Bay Helicopters (per NTSB report)

Source: NTSB case ERA17LA168
Acc · 2012-09-19 Operator named in NTSB report
BELL 206 - B (N222GR) None injury Part 91

Operated by Chesapeake Bay Helicopters (per NTSB report)

Source: NTSB case WPR12LA426
Acc · 2012-04-26 Operator named in NTSB report
BELL 206B (N2068X) Minor injury Part 91

Operated by CHESAPEAKE BAY HELICOPTERS INC (per NTSB report)

Source: NTSB case CEN12LA258

FAA enforcement actions

FAA enforcement records haven't been loaded into GroundCheck yet, so none can be shown — a gap in our data, not evidence of a clean enforcement history.

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.

2 reports on file.

O · 2026-05-28 Matched by certificate designator
N774CB · ATA 7200

MS20143 NUTS ARE UTILIZED TO SECURE WITHIN THE ENGINE ASSEMBLY THE FOLLOWING ARTICLES COMPRESSOR, TURBINE, FUEL CONTROL, GOVERNOR, FUEL PUMP, TACH GENERATORS, GEARBOX SPLIT LINE, AND HAVE BEEN FOUND NUMEROUS OCCASIONS BACKING OFF. THE MS21043 NUTS HAVE BEEN RECEIVED NEW FROM MANUFACTURER WITH NO DRAG TORQUE. THE LOCKING FEATURE IS FAILING. LOT NUMBERS ARE NOT SIMILAR. LOT NUMBERS, A FEW ARE 54539-000, 206242-1, 101638, 7365911005, M001463-001. MANUFACTURERS ARE VARIOUS FROM ONE MONROE AEROSPACE, AVAIL (BOEING), TO ESNA. 3 SEPARATE TURBINE INSTALLATIONS WHERE NEW NUTS WERE INSTALLED FAILED. NUTS WERE TORQUED PER M250C20-OMM 10W2 72-50-00. THE LAST 3 COMPRESSOR INSTALLATION WHERE THE NUTS WERE REPLACED HAD THE SAME ISSUE WHERE THE BUTS WERE BACKING OFF.

Source: SDR 2026FA0000472 · FAA SDRS
O · 2022-10-03 Matched by certificate designator
N774CB · ATA 6310

INITIAL CLUTCH WAS REMOVED FOR A DIFFERENT DISCREPANCY AND WAS FOUND TO HAVE A BAD SPRAG CLUTCH 300 HOURS AFTER OVERHAUL. NEXT CLUTCH WAS FOUND TO HAVE A BAD SPRAG CLUTCH 82 HOURS AFTER OVERHAUL. NEXT CLUTCH WAS FOUND TO HAVE A BAD SPRAG CLUTCH 0 TSO .

Source: SDR 2022FA0000568 · FAA SDRS

Linked aircraft

N-numberMake / modelYearStatusLink basis
N2068XOperator named in NTSB report
N222GRHYLIO INC AG 230Valid RegistrationOperator named in NTSB report
N728CBCOSTRUZIONI AERONAUTICHE TECNA P-MENTOR2024Valid RegistrationOperator named in NTSB report
N748CBMCDONNELL DOUGLAS HELICOPTER 369E1988Valid RegistrationMatched by certificate designator
N774CBHUGHES HELICOPTERS INC 369E1983Valid RegistrationMatched by certificate designator