Helico Sonoma Inc.

Part 135 operator · designator 1N7A

Also recorded as: HELICO SONOMA, HELICO SONOMA INC., Helico Sonoma Inc.

Accident & enforcement record

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

NTSB accidents & incidents

Accident · 2021-10-28 Operator named in NTSB report

BELL 206L-3 (N27TK) No injuries Part 91

Operated by Helico Sonoma Inc. (per NTSB report)

A passenger’s unsecured object departed the cabin resulted in a collision with the tail rotor drive shaft.

Source: NTSB case WPR22LA031

FAA enforcement actions

Civil penalty ordered · 2025-06-24 Name match — reviewer confirmed

Drug & alcohol testing programAir carrier / commercial operator

Sanction: $13,125 · case closed 2025-11-20

Source: FAA case 2025WP910052

Civil penalty ordered · 2020-08-19 Name match — reviewer confirmed

Drug & alcohol testing programAir carrier / commercial operator

Sanction: $4,500 · case closed 2021-07-15

Source: FAA case 2020WP910089

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 2019–2019. Most-reported systems: Main rotor (62) — 1. Most-common natures of condition, as filed: OTHER — 1.

1 report on file.

OTHER · 2019-08-22 Matched by certificate designator

N557SM · ATA 6240

Part: TACHOMETER — FAILED (DUAL)

CUSTOMER REPORTED DUAL TACHOMETER FAILED DURING FIRST TRACK AND BALANCE FLIGHT.

Source: SDR YV3R2019082920168

Linked aircraft

N-number	Make / model	Year	Status	Link basis
N27TK	BELL 206L-3	1985	Valid Registration	Matched by certificate designatorOperator named in NTSB report
N557SM	ROBINSON HELICOPTER COMPANY R44 II	2007	Valid Registration	Matched by certificate designator