CRJ200 crew had the stabilizer trim and mach trim fail on approach to lga.

Attributes
ACN	628429
Time
Date	200408
Day	Tue
Local Time Of Day	1801 To 2400
Place
Locale Reference	airport : lga.airport
State Reference	NY
Altitude	msl single value : 4000
Environment
Flight Conditions	Mixed
Light	Dusk
Aircraft 1
Controlling Facilities	tracon : n90.tracon
Operator	common carrier : air carrier
Make Model Name	Regional Jet 200 ER&LR
Operating Under FAR Part	Part 121
Flight Phase	descent : approach
Flight Plan	IFR
Person 1
Affiliation	company : air carrier
Function	flight crew : first officer
Experience	flight time last 90 days : 80 flight time total : 6000 flight time type : 1600
ASRS Report	628429
Person 2
Affiliation	company : air carrier
Function	flight crew : captain oversight : pic
Experience	flight time last 90 days : 250 flight time total : 10000 flight time type : 5000
ASRS Report	628431
Events
Anomaly	aircraft equipment problem : less severe
Independent Detector	aircraft equipment other aircraft equipment : stab trim indication other flight crewa other flight crewb
Resolutory Action	controller : issued new clearance controller : provided flight assist flight crew : landed as precaution other
Consequence	other
Supplementary
Problem Areas	Aircraft
Primary Problem	Aircraft

Narrative:

While being vectored toward lga, we experienced a stabilizer trim and mach trim failure. The captain was flying so I ran the QRH and was unable to fix the failure. We asked for and received vectors for more time to work on the problem. I called dispatch and maintenance via comrdo. Dispatch ran the landing numbers for us. Both parties (us and dispatch) agreed that an emergency declaration was not necessary. Maintenance control also gave us some additional troubleshooting ideas, although it did not fix the problem. After consulting with company, we set up for a flaps 20 degree landing as per the QRH. The approach and landing was uneventful, however, lga deployed the crash fire rescue equipment trucks as a precautionary measure. Upon landing, tower asked us if further assistance was required. We said no, and taxied in normally.

Original NASA ASRS Text

Title: CRJ200 CREW HAD THE STABILIZER TRIM AND MACH TRIM FAIL ON APCH TO LGA.

Narrative: WHILE BEING VECTORED TOWARD LGA, WE EXPERIENCED A STABILIZER TRIM AND MACH TRIM FAILURE. THE CAPT WAS FLYING SO I RAN THE QRH AND WAS UNABLE TO FIX THE FAILURE. WE ASKED FOR AND RECEIVED VECTORS FOR MORE TIME TO WORK ON THE PROB. I CALLED DISPATCH AND MAINT VIA COMRDO. DISPATCH RAN THE LNDG NUMBERS FOR US. BOTH PARTIES (US AND DISPATCH) AGREED THAT AN EMER DECLARATION WAS NOT NECESSARY. MAINT CTL ALSO GAVE US SOME ADDITIONAL TROUBLESHOOTING IDEAS, ALTHOUGH IT DID NOT FIX THE PROB. AFTER CONSULTING WITH COMPANY, WE SET UP FOR A FLAPS 20 DEG LNDG AS PER THE QRH. THE APCH AND LNDG WAS UNEVENTFUL, HOWEVER, LGA DEPLOYED THE CFR TRUCKS AS A PRECAUTIONARY MEASURE. UPON LNDG, TWR ASKED US IF FURTHER ASSISTANCE WAS REQUIRED. WE SAID NO, AND TAXIED IN NORMALLY.

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.