Cessna 402 captain reported an air turnback after failure of the right hand alternator.

Attributes
ACN	1748510
Time
Date	202007
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Cessna 402/402C/B379 Businessliner/Utiliner
Operating Under FAR Part	Part 135
Flight Phase	Climb
Route In Use	Vectors
Flight Plan	IFR
Component
Aircraft Component	AC Generator/Alternator
Person 1
Function	Captain Pilot Flying
Qualification	Flight Crew Air Transport Pilot (ATP) Flight Crew Instrument Flight Crew Multiengine
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Procedural Published Material / Policy

Narrative:

After takeoff on climbout; I noticed the right alternator was now indicating 0 amps. Tested the functionality by switching on windshield de-ice and noted a 25 amp increase on the left alt; and the right alt was still indicating 0 amps. Returned to land ZZZ without issue.

Original NASA ASRS Text

Title: Cessna 402 Captain reported an air turnback after failure of the right hand alternator.

Narrative: After takeoff on climbout; I noticed the right alternator was now indicating 0 Amps. Tested the functionality by switching on windshield de-ice and noted a 25 amp increase on the Left Alt; and the Right alt was still indicating 0 Amps. Returned to land ZZZ without issue.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.