In the 1960s, Aero Union acquired five former US Navy AF-2 Guardians. Only two were fully converted to airtanker (N9995Z and N3144G), a third was partially converted, and two remained unused and unconverted. The latter three remained in storage at Chico, CA for many years.
Falsely painted as N9995Z, the Guardian at the Pima museum is in fact N9994Z, which was one of the unconverted aircraft. Aero Union donated it to the Pima Air Museum in 1991, restoring it to static display condition the previous year. Although this aircraft had never been an airtanker and had never seen service with Aero Union, they painted it in their full markings to resemble Aero Union's airtanker N9995Z / 21-E.

Unusual visitor to Adelaide, ZCY operating CFH21 to Newcastle departing off Rw 23.

Photographer Dolzall

On standby at San Bernardino Air Tanker Base.

A 1993-build aircraft, ex LN-MOD of Lufttransport A/S and registered in Australia since 2011

Photographer unknown

Delivered to Delta Air Lines as N3328L in 1967. To Ozark Air Lines as N921L in 1986. Stored at Victorville, CA in 2001 then at Roswell, NM from 2003. Scrapped in 2007.

The Los Angeles County Fire Department (LACFD) Air Operations operates 10 aircraft - 5 Sikorsky S-70 Firehawks (three S-70A and two S-70i) and 5 Bell 412s (three 412EPs and two 412HPs) - for paramedic transport, hoist rescues and wildland firefighting. Based at Barton Heliport at Whiteman Airport, each morning, a minimum of three regional air squads are operational including deployments to the North (Fire Station 129 Lancaster), East (Brackett Field) and, in fire season, to the West (Fire Camp 8 in Malibu). It received two S-70As in 2001, one in 2005 and two S-70i's in 2020, including N821LA.

Actually ex N9994Z.

Photographer: Al Rodriguez. K25 slide scan. Delivered 1968 as N3328L to Delta. Ozark N921L 1978, merged into TWA 1986. Withdrawn Victorville, CA 2001, subsequently scrapped.

Reregistered ZK-SOW in December 2003. Bob Kerr photo