PA28 instructor pilot allowed a student pilot to make a hard landing. The aircraft was damaged.

Attributes
ACN	614184
Time
Date	200404
Day	Fri
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 25
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : instructional
Make Model Name	PA-28 Cherokee Arrow IV
Operating Under FAR Part	Part 91
Flight Phase	descent : approach landing : roll
Flight Plan	None
Person 1
Affiliation	other
Function	instruction : instructor
Qualification	pilot : instrument pilot : cfi pilot : multi engine
Experience	flight time last 90 days : 82 flight time total : 530 flight time type : 259
ASRS Report	614184
Person 2
Affiliation	other
Function	instruction : trainee
Events
Anomaly	non adherence : published procedure other anomaly other anomaly
Independent Detector	other flight crewa other flight crewb
Resolutory Action	none taken : detected after the fact
Consequence	other other
Supplementary
Problem Areas	Flight Crew Human Performance
Primary Problem	Flight Crew Human Performance

Narrative:

While training a student on lndgs, he reduced power and flared too early. The aircraft started to sink. I immediately added power and decreased the angle of attack to slow the sink rate. The plane landed hard on the main gear, breaking a trunnion mount. We taxied the aircraft to the parking area. No one was injured.

Original NASA ASRS Text

Title: PA28 INSTRUCTOR PLT ALLOWED A STUDENT PLT TO MAKE A HARD LNDG. THE ACFT WAS DAMAGED.

Narrative: WHILE TRAINING A STUDENT ON LNDGS, HE REDUCED PWR AND FLARED TOO EARLY. THE ACFT STARTED TO SINK. I IMMEDIATELY ADDED PWR AND DECREASED THE ANGLE OF ATTACK TO SLOW THE SINK RATE. THE PLANE LANDED HARD ON THE MAIN GEAR, BREAKING A TRUNNION MOUNT. WE TAXIED THE ACFT TO THE PARKING AREA. NO ONE WAS INJURED.

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.