Mooney 20T pilot reported a low altitude warning due to an altitude overshoot in the vicinity of a t...

Attributes
ACN	1554591
Time
Date	201806
Local Time Of Day	1201-1800
Place
Locale Reference	ZZZ.Airport
State Reference	US
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Make Model Name	M-20 T Predator
Operating Under FAR Part	Part 91
Flight Phase	Cruise
Route In Use	Direct
Flight Plan	VFR
Component
Aircraft Component	Vacuum Pump
Person 1
Function	Single Pilot Pilot Flying
Qualification	Flight Crew Instrument Flight Crew Flight Instructor Flight Crew Commercial Flight Crew Multiengine
Experience	Flight Crew Last 90 Days 25 Flight Crew Total 3410 Flight Crew Type 525
Events
Anomaly	Aircraft Equipment Problem Less Severe Deviation - Altitude Overshoot Inflight Event / Encounter CFTT / CFIT Inflight Event / Encounter Weather / Turbulence

Narrative:

[I was] returning to home airport in an aircraft with a failed vacuum pump. Metar was 1;900 MSL with good visibility and conditions forecast to improve. [I] experienced degrading MVFR conditions in light rain about 10 northeast and diverted east. [I] turned south to avoid a tower near the flight path and received a 500 foot AGL annunciation via foreflight/stratus. With the increased workload of partial panel; I did not maintain my target altitude following a power reduction. [I] remedied with a pitch change and trim adjustment. Visibility and ceiling improved prior to crossing ZZZ and [I] was able to complete the rest of the flight in VFR weather.

Original NASA ASRS Text

Title: Mooney 20T pilot reported a low altitude warning due to an altitude overshoot in the vicinity of a tower.

Narrative: [I was] returning to home airport in an aircraft with a failed vacuum pump. METAR was 1;900 MSL with good visibility and conditions forecast to improve. [I] experienced degrading MVFR conditions in light rain about 10 northeast and diverted east. [I] turned south to avoid a tower near the flight path and received a 500 foot AGL annunciation via ForeFlight/Stratus. With the increased workload of partial panel; I did not maintain my target altitude following a power reduction. [I] remedied with a pitch change and trim adjustment. Visibility and ceiling improved prior to crossing ZZZ and [I] was able to complete the rest of the flight in VFR weather.

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.