Alta Sierra Airport (O69) — Grass Valley, California

Alta Sierra Airport, identified by FAA identifier O69 and database ID 27551, is a general aviation facility nestled in the Sierra Nevada foothills of Nevada County, California. Located within the Alta Sierra residential community southeast of Grass Valley, this privately owned public-use airport serves recreational pilots, flight training operations, and light aircraft traffic across the greater Grass Valley–Nevada City corridor.

Situated at an elevation of approximately 2,813 feet above mean sea level, Alta Sierra Airport operates a single runway — Runway 13/31 — measuring roughly 2,700 feet in length and surfaced in asphalt. The airport's higher elevation and mountain terrain demand particular attention to density altitude calculations, especially during warm summer months when temperatures climb and effective runway performance diminishes. Pilots unfamiliar with high-density altitude operations are encouraged to consult current ASOS data and performance charts prior to departure.

The airport is owned and managed privately, yet remains open for public use — a common arrangement among California's rural general aviation airports. It is not towered, meaning pilots conduct operations on the Common Traffic Advisory Frequency (CTAF) and are responsible for self-announcing positions on the standard advisory frequency. Traffic pattern awareness is critical here given the surrounding terrain and the mix of student and recreational aircraft that regularly use the field.

Grass Valley itself sits in the heart of the Gold Country region, approximately 60 miles northeast of Sacramento and 170 miles northeast of San Francisco. The city of roughly 13,000 residents serves as the Nevada County seat and has long been a destination for those seeking Gold Rush history, outdoor recreation in the Tahoe National Forest, and a thriving arts community. Alta Sierra Airport provides pilots direct access to this region without the congestion and fees associated with larger commercial airports such as Sacramento International (SMF) or even the closer but busier Auburn Municipal Airport (AUN).

For fuel, maintenance, and services, pilots should verify current availability before arrival, as small general aviation airports like O69 may have limited on-site services. Nearby alternatives include Nevada County Airport (GOO) in Grass Valley proper, which offers a longer 3,670-foot runway and additional amenities, making it the primary instrument and IFR alternative for the area. Pilots planning cross-country flights through the Sierra Nevada region frequently use Alta Sierra as a fuel or rest stop on routes connecting the Central Valley to Lake Tahoe, Reno, or points east.

The surrounding Alta Sierra community is a master-planned residential development with fly-in access built into its design — a concept popular throughout California's foothill counties. Residents with hangar homes or tie-down access enjoy direct ramp-to-road connectivity, making the airport an active part of the neighborhood's identity. This integration also means aircraft operations must be conducted thoughtfully, with sensitivity to community noise standards and traffic patterns that protect residential areas.

Weather at Alta Sierra Airport can shift rapidly due to the Sierra Nevada's influence on local microclimates. Afternoon convective activity in summer, winter snowfall that may temporarily close or complicate operations, and low-valley fog that can trap aircraft on the field are all part of the operational reality here. Pilots are strongly advised to obtain a full weather briefing through 1800wxbrief.com or ForeFlight before departing, and to have a solid alternate plan given the terrain limitations on missed approach and go-around options.

Whether you are a local pilot based in the Gold Country, a visitor flying in to explore Grass Valley's Victorian downtown and Empire Mine State Historic Park, or a student building cross-country hours in the Sierra foothills, Alta Sierra Airport (O69) represents a classic example of California's rich general aviation infrastructure — small, community-integrated, and deeply tied to the landscape it serves.

Alta Sierra Airport Contact Information

Address, Phone Number, and Hours for an Airports in Grass Valley, California.

Name Alta Sierra Airport
Address 18575 Norlene Way, Grass Valley CA 95949 Map
Phone (530) 272-9098
Website
Hours

Map of Alta Sierra Airport

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Frequently Asked Questions — Alta Sierra Airport (O69), Grass Valley, CA

Alta Sierra Airport carries the FAA identifier O69 and is assigned database ID 27551 in the FAA's official airport database. It is located within the Alta Sierra residential community in Nevada County, southeast of downtown Grass Valley, California, at an elevation of approximately 2,813 feet MSL. The airport lies roughly 60 miles northeast of Sacramento and provides general aviation access to the Gold Country foothills region.

O69 operates a single asphalt runway designated Runway 13/31, approximately 2,700 feet in length. The airport is uncontrolled — no control tower — so pilots self-announce on the CTAF. Density altitude is a critical concern, particularly in summer: at 2,813 feet elevation, high temperatures can significantly reduce aircraft performance. Pilots should carefully review POH performance charts and obtain current weather data before operations, and should be prepared for surrounding terrain on all traffic pattern legs.

Yes, Alta Sierra Airport is privately owned but open to public use, meaning any licensed pilot may operate there without prior permission. However, on-site services are limited — fuel availability and maintenance support are not guaranteed. Pilots are advised to verify current fuel and service status through current NOTAMs or by contacting the airport manager before planning a fuel stop. For more comprehensive services, nearby Nevada County Airport (GOO) in Grass Valley offers a longer runway, IFR approaches, and more consistent amenities.

The closest and most capable alternative is Nevada County Airport (GOO), located in Grass Valley proper with a 3,670-foot runway and instrument approaches. Further afield, Auburn Municipal Airport (AUN) in Placer County provides additional services about 25 miles south. For commercial travel, Sacramento International Airport (SMF) is approximately 60 miles southwest and serves major airlines. Pilots in the region sometimes also use Lincoln Regional Airport (LHM) or Sutter County Airport (O52) for specific service needs.

Alta Sierra Airport is integrated directly into the Alta Sierra master-planned residential community, giving it a fly-in neighborhood character uncommon even among California's many small general aviation fields. Residents with hangar homes have direct ramp access, making aviation part of daily community life. This residential integration also means noise sensitivity is elevated and traffic pattern compliance is especially important. The airport's foothill setting offers scenic Sierra Nevada approaches and serves pilots seeking access to Grass Valley's Gold Rush heritage sites, including Empire Mine State Historic Park, without the traffic and fees of larger regional airports.

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