Small aircraft on practice NDB approach has near midair collision.

Attributes
ACN	179178
Time
Date	199105
Day	Sun
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : t89
State Reference	TX
Altitude	msl bound lower : 2500 msl bound upper : 2500
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	Small Aircraft, High Wing, 1 Eng, Fixed Gear
Flight Phase	cruise other descent : approach descent other
Flight Plan	VFR
Aircraft 2
Make Model Name	Small Aircraft
Flight Phase	cruise other
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : commercial pilot : instrument pilot : cfi
Experience	flight time last 90 days : 110 flight time total : 1140 flight time type : 250
ASRS Report	179178
Person 2
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Events
Anomaly	conflict : nmac
Independent Detector	other other : unspecified cockpit
Resolutory Action	flight crew : took evasive action
Consequence	Other
Miss Distance	horizontal : 250 vertical : 100
Supplementary
Primary Problem	Flight Crew Human Performance

Narrative:

While on a practice NDB approach at castroville, tx airport, another aircraft climbing from below passed below and to the left and was unobserved by me until within 300', upon which a right turn was commenced to avoid a collision.

Original NASA ASRS Text

Title: SMA ON PRACTICE NDB APCH HAS NMAC.

Narrative: WHILE ON A PRACTICE NDB APCH AT CASTROVILLE, TX ARPT, ANOTHER ACFT CLBING FROM BELOW PASSED BELOW AND TO THE LEFT AND WAS UNOBSERVED BY ME UNTIL WITHIN 300', UPON WHICH A RIGHT TURN WAS COMMENCED TO AVOID A COLLISION.

Data retrieved from NASA's ASRS site as of July 2007 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.