Instructor with student pilot practicing no flap lndgs with forward slips. Descent rate increase, IA...

Attributes
ACN	111008
Time
Date	198905
Day	Tue
Local Time Of Day	0601 To 1200
Place
Locale Reference	airport : pmp
State Reference	FL
Altitude	agl bound lower : 0 agl bound upper : 0
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	descent : approach landing other
Flight Plan	None
Person 1
Affiliation	Other
Function	instruction : instructor
Qualification	pilot : atp
Experience	flight time last 90 days : 188 flight time total : 1550 flight time type : 301
ASRS Report	111008
Person 2
Affiliation	Other
Function	instruction : trainee
Qualification	pilot : student
Events
Anomaly	inflight encounter other other anomaly other anomaly other
Independent Detector	other flight crewa
Resolutory Action	none taken : insufficient time
Consequence	other
Supplementary
Primary Problem	Flight Crew Human Performance
Air Traffic Incident	Pilot Deviation

Narrative:

Training flight originated at fxe. VFR conditions, winds at pmp 270/12. Occurrence took place on the fourth practice landing on runway 28 at pmp. It was a forward slip to land, no flap landing. It was the second forward slip of our flight. The maneuver was begun at approximately 600' AGL on final. Airspeed was stabilized at 65 KIAS. Sink rate was also stabilized at 400-500 FPM. As we approached our targeted T/D point, about 150 beyond the runway # marking, the approach looked good. Approximately 150-200' on short final I felt our sink rate increase dramatically. I checked the vsi, which showed 1000 FPM descent; then airspeed indicator, which read 45 KIAS. I added power, but it only slowed our sink rate a bit. We made a hard landing on the main wheels, tail and horizontal stabilizer. We taxied off, shut and assessed the damage. Control surfaces had no major damage--some sheet metal damage was all that was observed on the bottom of the tail bulkhead. Aircraft was flown back to home base at fxe. I feel the single largest factor was probably low level wind shear.

Original NASA ASRS Text

Title: INSTRUCTOR WITH STUDENT PLT PRACTICING NO FLAP LNDGS WITH FORWARD SLIPS. DESCENT RATE INCREASE, IAS DECREASED, LANDED HARD ON MAIN GEAR, TAIL AND HORIZONTAL STABILIZER.

Narrative: TRNING FLT ORIGINATED AT FXE. VFR CONDITIONS, WINDS AT PMP 270/12. OCCURRENCE TOOK PLACE ON THE FOURTH PRACTICE LNDG ON RWY 28 AT PMP. IT WAS A FORWARD SLIP TO LAND, NO FLAP LNDG. IT WAS THE SECOND FORWARD SLIP OF OUR FLT. THE MANEUVER WAS BEGUN AT APPROX 600' AGL ON FINAL. AIRSPD WAS STABILIZED AT 65 KIAS. SINK RATE WAS ALSO STABILIZED AT 400-500 FPM. AS WE APCHED OUR TARGETED T/D POINT, ABOUT 150 BEYOND THE RWY # MARKING, THE APCH LOOKED GOOD. APPROX 150-200' ON SHORT FINAL I FELT OUR SINK RATE INCREASE DRAMATICALLY. I CHKED THE VSI, WHICH SHOWED 1000 FPM DSCNT; THEN AIRSPD INDICATOR, WHICH READ 45 KIAS. I ADDED PWR, BUT IT ONLY SLOWED OUR SINK RATE A BIT. WE MADE A HARD LNDG ON THE MAIN WHEELS, TAIL AND HORIZ STAB. WE TAXIED OFF, SHUT AND ASSESSED THE DAMAGE. CTL SURFACES HAD NO MAJOR DAMAGE--SOME SHEET METAL DAMAGE WAS ALL THAT WAS OBSERVED ON THE BOTTOM OF THE TAIL BULKHEAD. ACFT WAS FLOWN BACK TO HOME BASE AT FXE. I FEEL THE SINGLE LARGEST FACTOR WAS PROBABLY LOW LEVEL WIND SHEAR.

Data retrieved from NASA's ASRS site as of August 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.

Instructor with student pilot practicing no flap lndgs with forward slips. Descent rate increase, IAS decreased, landed hard on main gear, tail and horizontal stabilizer.