SIERRA MOUNTAIN AVIATION, INC.
13308 NEVADA CITY AVE., GRASS VALLEY, CA 95945 · NAICS 488190 Other Support Activities for Air Transportation
Having inspection records is common for businesses in regulated industries. Data and methodology
Inspection records
Apr 18, 2018#343095071Apr 18, 2018FatalityFatality/Catastrophe (M) · Partial scope, SafetyFatality#343095071$11,2353 viol.3 violations$11,235 in penalties
Inspection #343095071
Dates
- Opened
- Apr 18, 2018
- Closing Conference Date
- Jun 7, 2018
- Contested
- Sep 11, 2018
- Final Order
- Aug 3, 2021
- Closed
- Nov 16, 2021
Inspection
- Advance Notice
- No
- Owner Type
- Private
- Union Status
- No
- Number of Employees
- 2
- Related Activity
- 1 accident
Violations and Penalties
- Total Violations
- 3
- Violation Types
- 1 serious, 2 other-than-serious
- Initial Penalties
- $11,235
- Penalties on Record
- $11,235
- Site Address
- 13308 Nevada City Ave., Grass Valley, CA 95945
- Industry
- 488190 Other Support Activities for Air Transportation
Fatality/Catastrophe Inspection: This inspection record is categorized as a fatality/catastrophe inspection in the DOL OSHA enforcement data.
Incident Investigation Summaries
Incident investigation summaries linked to this inspection through OSHA's accident and injury enforcement data. These summaries describe the reported incident. The enforcement outcome for the linked inspection is in the inspection details above.
One employee is killed; one employee hospitalized from a han
Violations
Violation list (3 of 3 shown)
| Citation | Standard | Type | Instances | Exposed | Initial | Current | Abatement | Contest | Final Order |
|---|---|---|---|---|---|---|---|---|---|
| 01001 | 3203(A) Injury and Illness Prevention Program | Other | 1 | 2 | $175 | $175 | Sep 11, 2018 | Aug 3, 2021 | |
| 01003 | 6151(C)(1) Portable Fire Extinguishers | Other | 3 | 2 | $260 | $260 | Sep 11, 2018 | Aug 3, 2021 | |
| 03001 | 3328(A)(2) Machinery and Equipment | Serious | 1 | 1 | $10,800 | $10,800 | Sep 11, 2018 | Aug 3, 2021 |
Penalty amounts may differ from final amounts after settlement or judicial review. How to read these records
About these records
A company page groups inspections with the same normalized employer name, city and state; it is not a legal-entity identifier (how pages are grouped).
This page displays public OSHA enforcement data. Status text follows the DOL inspection record first and may include citation-level context when the inspection feed and citation records are out of sync. Penalty amounts shown reflect the latest penalty amounts on record in the DOL database and may differ from initial assessments or final amounts. This is not an official OSHA resource.
OSHA's public enforcement data does not publish a "guilty" or "not guilty" field for inspections. The closest outcome fields available are the citation counts, penalty amounts, contest dates, final-order dates, and the inspection close date shown on this page. How to interpret these status fields. How initial and current penalties are recorded.
OSHA may publish multiple citation rows in the same inspection with the same standard and penalty fields. Separate rows can still differ in OSHA metadata such as citation identifier, recorded instance count, exposed workers, or gravity value. Contest and Final Order columns show citation-level dates from OSHA's enforcement record. A dash means OSHA's record does not currently show that activity for the citation.
Source: U.S. Department of Labor OSHA incident investigation data (`osha_accident` + `osha_accident_injury`). Linked via `rel_insp_nr` to the inspection activity number (exact government key). Injury, body part, source and event values are OSHA's own codes. OSHA states that these fields are not coded according to the requirements under the Occupational Injury and Illness Classification System (OIICS). Only the values present in the OSHA record are listed; an incident with no value that resolves in OSHA's code table shows "Injury details not recorded". Where a record covers several people, each field lists every value recorded across them.
Understanding These Penalties
The maximum penalty for a serious violation in 2025 is $16,550 per violation. For willful violations, the range is $11,823 to $165,514. The current penalty column shows the latest amount on record in OSHA's database for each citation. When the current penalty differs from the initial penalty, OSHA's records show that the amount changed during the enforcement process, but this page does not determine the specific reason for each change. Penalty amounts are set by OSHA and adjusted annually for inflation.
Standards cited
Industry comparison
Support Activities for Transportation, 9,808 employers with OSHA inspections. Arithmetic from DOL records.
BLS 2024 survey: support activities for air transportation reported 4.1 injuries and illnesses per 100 full-time workers (total recordable cases, national, private industry; relative standard error 7.5%; NAICS 4881 level). This is an industry-wide average from a federal survey, not a measurement of this establishment. Source