A PA-28 private pilot makes an emergency forced off airport landing as the aircraft suffers extreme ...

Attributes
ACN	292576
Time
Date	199501
Day	Sun
Local Time Of Day	1201 To 1800
Place
Locale Reference	airport : l00
State Reference	CA
Altitude	msl bound lower : 5000 msl bound upper : 5000
Environment
Flight Conditions	VMC
Light	Daylight
Aircraft 1
Operator	general aviation : personal
Make Model Name	PA-28 Cherokee/Archer II/Dakota/Pillan/Warrior
Operating Under FAR Part	Part 91
Flight Phase	climbout : intermediate altitude cruise other
Flight Plan	VFR
Person 1
Affiliation	Other
Function	flight crew : single pilot
Qualification	pilot : private
Experience	flight time last 90 days : 2 flight time total : 149 flight time type : 111
ASRS Report	292576
Person 2
Affiliation	Other
Function	observation : passenger observation : observer
Qualification	other other : other
Events
Anomaly	aircraft equipment problem : critical
Independent Detector	other flight crewa
Resolutory Action	flight crew : declared emergency other
Consequence	other Other
Supplementary
Primary Problem	Aircraft

Narrative:

I had just finished a phantom approach with a stall. I increased power and climbed approximately to 5000 ft AGL. I experienced loss of thrust followed by a knocking -- buzzing noise that progressed into violent shaking of the aircraft. I first leveled the aircraft, then went through emergency procedures. I throttled back and flew the airplane at 80 KTS, but the aircraft was still violently shaking. I tried to dial 121.5 and could not. I prepared to make an immediate landing. We spotted a field at our 2 O'clock and I set up for an approach. While setting up for the landing, I pulled the mixture full lean and increased the power to 1500 RPM to kill the engine, but the engine would not quit. I throttled back and slipped the plane until 20 ft AGL. I straightened the plane and did a 2 point landing, let the nose wheel down, and applied brakes. The engine would not shut down, so I turned the magnetic switch off when the RPM fluctuated to its slowest cycle. It wasn't till after the engine shut down, that I then noticed that the propeller was missing 5 inches off the tip. Then I made contact with wjf.

Original NASA ASRS Text

Title: A PA-28 PVT PLT MAKES AN EMER FORCED OFF ARPT LNDG AS THE ACFT SUFFERS EXTREME VIBRATION.

Narrative: I HAD JUST FINISHED A PHANTOM APCH WITH A STALL. I INCREASED PWR AND CLBED APPROX TO 5000 FT AGL. I EXPERIENCED LOSS OF THRUST FOLLOWED BY A KNOCKING -- BUZZING NOISE THAT PROGRESSED INTO VIOLENT SHAKING OF THE ACFT. I FIRST LEVELED THE ACFT, THEN WENT THROUGH EMER PROCS. I THROTTLED BACK AND FLEW THE AIRPLANE AT 80 KTS, BUT THE ACFT WAS STILL VIOLENTLY SHAKING. I TRIED TO DIAL 121.5 AND COULD NOT. I PREPARED TO MAKE AN IMMEDIATE LNDG. WE SPOTTED A FIELD AT OUR 2 O'CLOCK AND I SET UP FOR AN APCH. WHILE SETTING UP FOR THE LNDG, I PULLED THE MIXTURE FULL LEAN AND INCREASED THE PWR TO 1500 RPM TO KILL THE ENG, BUT THE ENG WOULD NOT QUIT. I THROTTLED BACK AND SLIPPED THE PLANE UNTIL 20 FT AGL. I STRAIGHTENED THE PLANE AND DID A 2 POINT LNDG, LET THE NOSE WHEEL DOWN, AND APPLIED BRAKES. THE ENG WOULD NOT SHUT DOWN, SO I TURNED THE MAG SWITCH OFF WHEN THE RPM FLUCTUATED TO ITS SLOWEST CYCLE. IT WASN'T TILL AFTER THE ENG SHUT DOWN, THAT I THEN NOTICED THAT THE PROP WAS MISSING 5 INCHES OFF THE TIP. THEN I MADE CONTACT WITH WJF.

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.

A PA-28 private pilot makes an emergency forced off airport landing as the aircraft suffers extreme vibration.