Prior to dispatch of a DH8 102 it was discovered a propeller blade had been installed without shop b...

Attributes
ACN	480251
Time
Date	200007
Day	Mon
Local Time Of Day	0001 To 0600
Place
Locale Reference	airport : zzz.airport
State Reference	US
Altitude	agl single value : 0
Environment
Light	Night
Aircraft 1
Controlling Facilities	tower : las.tower
Operator	common carrier : air carrier
Make Model Name	Dash 8-100
Operating Under FAR Part	Part 121
Flight Phase	ground : maintenance ground : parked
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	maintenance : inspector
Qualification	technician : powerplant technician : airframe
Experience	maintenance technician : 12
ASRS Report	480251
Person 2
Affiliation	company : air carrier
Function	oversight : supervisor
Qualification	technician : powerplant technician : airframe
Events
Anomaly	aircraft equipment problem : critical maintenance problem : improper maintenance maintenance problem : improper documentation non adherence : published procedure
Independent Detector	other other : person 3
Resolutory Action	none taken : detected after the fact
Consequence	other other
Factors
Maintenance	contributing factor : schedule pressure contributing factor : manuals contributing factor : work cards performance deficiency : scheduled maintenance performance deficiency : inspection performance deficiency : installation
Supplementary
Problem Areas	Maintenance Human Performance Chart Or Publication Aircraft
Primary Problem	Chart Or Publication

Narrative:

Maintenance supervisor requested that I sign in a propeller blade still in the crate from the vendor. I asked him to open the box and retrieve the paperwork. I verified the part number and serial number on paperwork was the same as that of the blade. Paperwork from vendor was in order so I completed a tag and signed same. I entered the appropriate information in computer system using menu xx, as I had been shown. Prior to dispatch of the aircraft, it was pointed out that the blade required balancing in our shop. We returned the aircraft to the hangar and repaired and return the blade in question, installing a blade that had been balanced subsequently. The aircraft was run with no problems and released. Post dispatch discussion with chief inspector revealed logic diagram for receiving was in mpp volume 1 that would have given an additional step to show a need for balancing. I stated that I had not been shown that part of procedure and that volume 1 of mpp was not present in maintenance manual at that time.

Original NASA ASRS Text

Title: PRIOR TO DISPATCH OF A DH8 102 IT WAS DISCOVERED A PROP BLADE HAD BEEN INSTALLED WITHOUT SHOP BALANCING.

Narrative: MAINT SUPVR REQUESTED THAT I SIGN IN A PROP BLADE STILL IN THE CRATE FROM THE VENDOR. I ASKED HIM TO OPEN THE BOX AND RETRIEVE THE PAPERWORK. I VERIFIED THE PART NUMBER AND SERIAL NUMBER ON PAPERWORK WAS THE SAME AS THAT OF THE BLADE. PAPERWORK FROM VENDOR WAS IN ORDER SO I COMPLETED A TAG AND SIGNED SAME. I ENTERED THE APPROPRIATE INFO IN COMPUTER SYS USING MENU XX, AS I HAD BEEN SHOWN. PRIOR TO DISPATCH OF THE ACFT, IT WAS POINTED OUT THAT THE BLADE REQUIRED BALANCING IN OUR SHOP. WE RETURNED THE ACFT TO THE HANGAR AND REPAIRED AND RETURN THE BLADE IN QUESTION, INSTALLING A BLADE THAT HAD BEEN BALANCED SUBSEQUENTLY. THE ACFT WAS RUN WITH NO PROBS AND RELEASED. POST DISPATCH DISCUSSION WITH CHIEF INSPECTOR REVEALED LOGIC DIAGRAM FOR RECEIVING WAS IN MPP VOLUME 1 THAT WOULD HAVE GIVEN AN ADDITIONAL STEP TO SHOW A NEED FOR BALANCING. I STATED THAT I HAD NOT BEEN SHOWN THAT PART OF PROC AND THAT VOLUME 1 OF MPP WAS NOT PRESENT IN MAINT MANUAL AT THAT TIME.

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.

Prior to dispatch of a DH8 102 it was discovered a propeller blade had been installed without shop balancing.