BE400 captain reports a misaligned PAPI for runway 25 at mth.

Attributes
ACN	1075780
Time
Date	201303
Local Time Of Day	1201-1800
Place
Locale Reference	MTH.Airport
State Reference	FL
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	Beechjet 400
Operating Under FAR Part	Part 135
Flight Phase	Initial Approach
Person 1
Function	Captain Pilot Not Flying
Qualification	Flight Crew Air Transport Pilot (ATP)
Events
Anomaly	ATC Issue All Types

Narrative:

On final approach to runway 25 at mth the PAPI was unreliable. It went from four white to white red white red (which it should never show) and skipped white red red red. We noticed the improper guidance and adjusted our descent angle accordingly and landed without incident. Evaluate the PAPI for correct information.

Original NASA ASRS Text

Title: BE400 Captain reports a misaligned PAPI for Runway 25 at MTH.

Narrative: On final approach to Runway 25 at MTH the PAPI was unreliable. It went from four white to white red white red (which it should never show) and skipped white red red red. We noticed the improper guidance and adjusted our descent angle accordingly and landed without incident. Evaluate the PAPI for correct information.

Data retrieved from NASA's ASRS site as of July 2013 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.