A F33 pilot reported deteriorating weather forced his return to his departure airport where he execu...

Attributes
ACN	912712
Time
Date	201009
Local Time Of Day	0601-1200
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	Mixed
Light	Daylight
Aircraft 1
Make Model Name	Bonanza 33
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Direct Vectors Visual Approach
Flight Plan	VFR
Component
Aircraft Component	AC Generator/Alternator
Person 1
Function	Pilot Flying Single Pilot
Qualification	Flight Crew Multiengine Flight Crew Instrument Flight Crew Commercial
Experience	Flight Crew Last 90 Days 35 Flight Crew Total 1470 Flight Crew Type 300
Events
Anomaly	Aircraft Equipment Problem Critical Deviation - Procedural Published Material / Policy Inflight Event / Encounter Weather / Turbulence

Narrative:

Departed on a short hop to [another airport] 25 NM southwest. Weather was VFR but ceilings were forecast to 'slowly deteriorate' later in the day. Weather to the west was supposed to be better. Was talking to TRACON shortly after takeoff. Upon reaching my destination; I decided the weather was declining faster than forecast and decided to return to my departure airport. Requested the GPS 28. Flew the approach to minimum and started the missed. Noticed the alternator light on; requested vectors and declared an emergency. Requested the ILS 4 into a nearby airport; just a couple of miles away. Must have hit the flip-flop (to the VOR frequency which has a similar approach) in turbulence and wasn't getting the glide scope so had to miss the ILS approach. The second ILS 4 approach was successful. The weather declined much faster than forecast. The alternator failed in flight and has been replaced.

Original NASA ASRS Text

Title: A F33 Pilot reported deteriorating weather forced his return to his departure airport where he executed a missed approach and discovered his alternator failed. An emergency was declared and he diverted to a nearby airport for a successful approach.

Narrative: Departed on a short hop to [another airport] 25 NM southwest. Weather was VFR but ceilings were forecast to 'slowly deteriorate' later in the day. Weather to the west was supposed to be better. Was talking to TRACON shortly after takeoff. Upon reaching my destination; I decided the weather was declining faster than forecast and decided to return to my departure airport. Requested the GPS 28. Flew the approach to minimum and started the missed. Noticed the Alternator light on; requested vectors and declared an emergency. Requested the ILS 4 into a nearby airport; just a couple of miles away. Must have hit the flip-flop (to the VOR frequency which has a similar approach) in turbulence and wasn't getting the glide scope so had to miss the ILS approach. The second ILS 4 approach was successful. The weather declined much faster than forecast. The alternator failed in flight and has been replaced.

Data retrieved from NASA's ASRS site as of April 2012 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.

A F33 pilot reported deteriorating weather forced his return to his departure airport where he executed a missed approach and discovered his alternator failed. An emergency was declared and he diverted to a nearby airport for a successful approach.